798:
which means that if the first action takes 1 unit of time, then after 2 units of time an infinite number of actions should have been performed. Thompson thought that this was problematic (as in Zeno's paradox, how can an infinite number of actions ever be completed?), and used the
Thompson's Lamp to illustrate the problem. To be precise, if you accept the possibility of supertasks, then you have to accept the possibility of Thompson's Lamp, but the problem with that is that the state of the lamp after infinite switches is completely undetermined, which seems strange at the least. Indeed, Thompson found this to be so strange as to declare the Thompson Lamp scenario to be impossible and, by modus tollens, the whole idea of supertasks. So, if you find the Thompson's Lamp scenario to be problematic as well, you may well be on Thompson's side. You may want to take a look at the
754:
or off state. It is basically stating (in an overly-complicated way) that the lamp is in an undefined state, and them demanding to know what state it is in. In demanding to know the discrete state of the lamp the "paradox" takes advantage of our common-sense assumption that a lamp must be either on or off, but that has already been violated in the statement of the question when it is stated that the lamp will have no time whatsoever between changes at t=2 min. The person posing the paradox is trying to have it both ways, first making us assume a priori that it's possible for the lamp to have an undefined state, then later demanding to know what the state is and declaring it a paradox when the answer is "undefined".
1875:"Benacerraf (1962) pointed out a sense in which the answer is yes. The description of the Thomson lamp only actually specifies what the lamp is doing at each finite stage before 2 minutes. It says nothing about what happens at 2 minutes, especially given the lack of a converging limit. It may still be possible to “complete” the description of Thomson’s lamp in a way that leads it to be either on after 2 minutes or off after 2 minutes. The price is that the final state will not be reached from the previous states by a convergent sequence. But this by itself does not amount to a logical inconsistency."
873:
describe it for t<2 i would answer "at 2, this takes whatever value you want, no matter what has happened before". Also note that the function is not clearly defined at times 1,1+1/2,1+1/2+1/4 (is it on or off when it is switching?) The trick of forcing an answer by saying that all time intervals sum up to 2 seems to need a careful reading. This sum is 1+1/2+1/4+1/8+1/16+1/32+..., not the same type of sum as say 1+1. What is exactly 2 is a limit, the sum of an infinite series, not a sum of any finite number of terms.
1158:
duration nor is it able to respond within an infinitesimally short time. At some point in the series, the duration of the interval will become less than the minimum response time of the lamp/switch system. Any physical lamp/switch system working within a specified environment will have such a minimum response time, which can be experimentally determined. Even an idealized lamp/switch system will reach a minimum response time beyond which quantum effects distort the outcome.
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also know that f(t) = On for all 0 ≤ t < 1, and f(t) = Off for all 1 ≤ t < 1.5, et cetera. This a function of a real variable t on the interval [0,2[ (where the last [ means: 2 excluded). It is not a function with a real value: the value of f(t) is in a set with two elements: {On,Off}. You could write it {True,False} or {0,1}, but f is not a function like y = f(t) with some 0 ≤ y ≤ 1 for all 0 ≤ t < 2.
22:
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which is perfectly reasonable, but
Knowledge should still report on it. Three, yes it is explained: "For even values of n, the above finite series sums to 1; for odd values, it sums to 0. In other words, as n takes the values of each of the non-negative integers 0, 1, 2, 3, ... in turn, the series generates the sequence {0, 1, 0, 1, 0, 1, ...}, representing the changing state of the lamp."
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the set {On,Off}. Even if we were to treat {0,1} as real numbers in , f(t) has no limit. Even if there was some alternative concept of a limit with lim f(t) = ½ (t → 2), this would not do because here 0 and 1 mean Off and On. The problem may be clearly stated with the help of f(t) —this is also a matter of taste— but not solved with f(t). --
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3570:{\displaystyle f(t)={\begin{cases}1{\text{ (ON) }}&{\text{if }}t\in \cup \{[0,1),[{\frac {3}{2}},{\frac {7}{4}}),[{\frac {15}{8}},{\frac {31}{16}})\cdots \}\\0{\text{ (OFF) }}&{\text{if }}t\in \cup \{[1,{\frac {3}{2}}),[{\frac {7}{4}},{\frac {15}{8}}),[{\frac {31}{16}},{\frac {63}{32}})\cdots \}\end{cases}}}
2367:{\displaystyle f(t)={\begin{cases}1{\text{ (ON) }}&{\text{if }}t\in \cup \{[0,1),[{\frac {3}{2}},{\frac {7}{4}}),[{\frac {15}{8}},{\frac {31}{16}})\cdots \}\\0{\text{ (OFF) }}&{\text{if }}t\in \cup \{[1,{\frac {3}{2}}),[{\frac {7}{4}},{\frac {15}{8}}),[{\frac {31}{16}},{\frac {63}{32}})\cdots \}\end{cases}}}
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infinite number of times in the way described then there was no last jab and we cannot ask whether the last jab was a switching on or a switching-off. But we did not ask about a last jab ; we asked about the net or total result of the whole infinite sequence of jabs, and this would seem to be a fair question."
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for this claim. It is true that most summation methods for divergent series assign this series a regularized sum of 1/2; for instance, its Cesaro sum is 1/2. The main editorial question for us is how to explain that distinction. Of course, we need to avoid falsehoods! I think the current wording: "In
1149:
The interesting aspect of
Thomson's Lamp is, as stated in the article, the conflict between the indeterminacy of the function at t=2 versus the "intuitive assumption that one should be able to determine the status of the lamp and the switch at any time". This conflict is intended to clinch a reductio
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Yes, I think you are missing something, and that is that
Thompson introduced this thought experiment to question the possibility of supertasks. A supertask is supposed to perform an infinite number of actions, and usually this is accomplished by doing each action in half the time as the previous one,
753:
Could someone explain this better? The problem appears to be that the person posing the question is demanding to know the state of the lamp at 2 minutes, when according to the statement of the problem at 2 minutes there will be exactly zero time between state changes - so the lamp lacks a discrete on
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The idea is that 2 minutes will eventually come, the error is in the phrasing. Eventually, the intravles will become infinately tiny, and the bulb will remain in a state of ifinately tiny state changes. The idea behind the argument is that you can not divide by infinity bassically, but 2 minutes will
1923:
I think
Thomson's article and the Knowledge article both adequately label the series as divergent, not convergent. It is admittedly misleading when Thomson says "its sum is 1/2", since the unqualified word "sum" is almost always reserved for convergent series, at least in the writing of contemporary
898:
The third question asks "would it make any difference if the lamp had started out being on, instead of off?" With regards to the state on/off of the lamp at t=2 minutes, it does not make any difference, but the total time the lamp has been on is (2/3)*2 minutes if it starts on and (1/3)*2 minutes if
780:
It seems to me that you just restated the first paragraph of "Discussion". In any case, the availability of a resolution for a paradox doesn't mean that it isn't a paradox. Your analysis contains an implication that the lamp does not have a state, which is itself a nontrivial argument. Arriving from
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There can be no answer simply because according to the asymptotal nature of the ever-diminishing periods, the sequence will never actually reach 2.0mins - therefore it is not applicable what the state will be at the point. This is equivalent to trying to solve an equation on a
Cartesian plane, where
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If it is not instantaneous, the problem remains, but with a delay between toggling the switch and the lamp changing state. For example, at one minute it is toggled off; it responds by turning off at 1 minute 1 second, at which time its status is again undefined. In addition, there will come a point
998:
Assuming the switch is made of mass, which it would be if it were a lamp, then the speed of light is indeed the speed limit but the switch cannot be flicked at that speed. In actuality, it would be up to a near infinitely small number less than the speed of light itself. If the switch is not made
925:
The question is the value of f(2). There is no answer because by definition, by choice, by decision (0 ≤ t < 2), there is no f(2). This is of course no real world lamp (as was justly stressed by others), but in the real world, the lamp would stay in its last state, if nobody comes to put in some
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A simpler example to illustrate what i mean can be: let the function be 1 at 0, and at times 1, 1+1/2, 1+1/2+1/4,... the function changes to 1 (it was already 1, actually). Now tell me the value at 2. An answer might be: if we assume continuity, it is 1. But without assuming continuity, every value
872:
I have just read this article, so I am no expert. But it seems to me that we have a definition of a discontinuous function -more and more discontinuous as 2 is approached- for 0<=t<2 and we are asked about the behaviour of the function at 2. If you want me to tell the value at 2 when you only
284:
How can this quote be true? "The sum of all these progressively smaller times is exactly two minutes." The sum of an infinite progression of intervals that are halved would never reach 2 minutes. But maybe that's the crux of the paradox and I'm just not getting it. :-) If so, seems more like a koan
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So the paradox is about there being no last state before t = 2, thus no chance to extend f with this as f(2). It is not about some limit or sum or integral of f, and still less about some limit or sum or integral of another series. The function f has no limit because no such thing has a meaning in
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The state of the bulb would bassically be whether or not the number of times it is switched is even or odd, but scince the number of times must become infinate, because one is infinately dividing by 2, it is neither odd nor even. one could assume that the bulb is neither on nor off after a certain
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It seems impossible to answer this question. It cannot be on, because I did not ever turn it on without at once turning it off. It cannot be off, because I did in the first place turn it on, and thereafter I never turned it off without at once turning it on. But the lamp must be either on or off.
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The state f of
Thomson’s lamp is a function of time, perfectly defined for all t such that 0 ≤ t < 2. The definition is given in short in a table at the left of the article. The state does not change except for toggling the switch, so that we not only know that f(0) = On and f(1) = Off, but we
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One, the connection is presented as "The question is similar to..." in the article, a mild statement which I don't think is in question. Two, the connection is made by
Thomson himself in the article that originally introduced the problem. It sounds like you have a problem with Thomson's analysis,
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It is obviously physically impossible, but it is not conceptually impossiible, as we've been conceptualizing it here. This would lead me to assume that the answer is a CONCEPT rather than a physical QUANTITY. Trying to derrive a physical quantity from such a question is like asking "What is Truth
1726:
The claim that the lamp is on during [0, 1) and off during [1, 3/2) is dubious. Is the lamp's state defined at t=1? Just above this topic on the talk page, SputnikIan claims that it isn't. Now, I am not interested in their answer to this question, or to yours. I am only interested in treatments
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The lamp is either on or off at the 2-minute mark. If the lamp is on, then there must have been some last time, right before the 2-minute mark, at which it was flicked on. But, such an action must have been followed by a flicking off action since, after all, every action of flicking the lamp on
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The lamp is either on or off at the 2-minute mark. If the lamp is on, then there must have been some last time, right before the 2-minute mark, at which it was flicked on. But, such an action must have been followed by a flicking off action since, after all, every action of flicking the lamp on
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The mathematical series is not hard to accept. T=2 is a limit which is approached asymptotically but is never reached over any finite number of terms. There's nothing too challenging about the concept that the number of terms, and therefore the odd/even state of the last term, is undefined. The
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You should read the rest of the paragraph you just quoted: "In fact, this manipulation can be rigorously justified: there are generalized definitions for the sums of series that do assign Grandi's series the value ½. On the other hand, according to other definitions for the sum of a series this
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Assigning S as it has been assumes that the sequence converges. In fact, it can be shown using the fact that there exist two subsequences of the partial sums (namely partial sums up to an even number and partial sums up to an odd number)--that converge to different limits--that the sum does not
1319:
This popular work is a survey (secondary source) of several paradoxes and problems of epistemology discussed in scientific and philosophical literature. The chapter on
Thomson's lamp describes various approaches to the problem and compares it to other paradoxes of infinity. (His observation on
1157:
The reason that we feel intuitively certain that the lamp's status cannot be indeterminate at t=2 is because the lamp is a physical, tangible object whose state can easily be determined. However, as a physical, tangible object it is not capable to respond to a stimulus of infinitesimally short
2554:
I've replaced that paragraph with
Thomson's original argument, which doesn't rest on knowing the "last" switch. In fact, Thomson explicitly stated otherwise: "But in any case it should be clear that no assumption about a last task is made in the lamp-argument. If the button has been jabbed an
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before the 2-minute mark is followed by one at which it is flicked off between that time and the 2-minute mark. So, the lamp cannot be on. Analogously, one can also reason that the lamp cannot be off at the 2-minute mark. So, the lamp cannot be either on or off. So, we have a contradiction.
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before the 2-minute mark is followed by one at which it is flicked off between that time and the 2-minute mark. So, the lamp cannot be on. Analogously, one can also reason that the lamp cannot be off at the 2-minute mark. So, the lamp cannot be either on or off. So, we have a contradiction.
1951:
From the last sentence in the article, "Later, he claims that even the divergence of a series does not provide information about its supertask: 'The impossibility of a super-task does not depend at all on whether some vaguely-felt-to-be-associated arithmetical sequence is convergent or
973:
solved unequivocally. Besides read the article, then source your statements, so that we may use them in the article in the future. This article discussion page is mainly for article discussions, otherwise for technical details that can be used to clarify and cleanup the article.
1343:
Here's how it seems to me. Am I missing something? At one minute, the lamp is turned off. If this is instantaneous, then the lamp changes state at one minute. Its status at one minute is undefined. Similarly at 1.5, 1.75, 1.825, ..., though it is defined between these times.
836:
I see this question as being the same as asking what is the last digit of the infinite decimal that equates to 10 divided by 99, i.e. 0.1010101010... Essentially, I interpret the question as asking what happens at the tail end when something occurs 'infinitely many' times.
391:
I'm marking this stuff as original research. I doubt that the mathematical theory of convergent series is really capable of "proving" anything about the ill-posed metaphysical question at hand. And I find it hard to believe that a reputable source has made this assertion.
3972:, you have stopped doing it. So there must be a transition from pressing to not-pressing; corresponding to this transition, the lamp must also have had a transition from the ON-OFF changing process to a non-changing state. So whether you like it or not, as time crosses
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The answer in this interpretation is "we do not have enough information from the setup to determine what that state is". It could be on, it could be off, it could suddenly turn into a lemon. The question does not give you enough information to tell you what happens.
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method in mathematics, one of several, and when considering a measuring instrument, such as a light detector that integrates all light during say 0.2 sec, a summation can be seen as a physically legitimate operation, although not necessarily unique, nor unambiguous.
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is some kind of abstract quantity that never approaches you on its own. The time, however, does not wait for you and it does not allow you to take infinite amount of time to write your series endlessly; it comes upon you whether you like it or not; in other words,
2744:
Look, if you find a published source that makes this argument, you're welcome to add it with a citation. To be honest, I doubt that you'll find your argument in the literature, for reasons that I've expressed above. But it would be interesting to be proven wrong!
1104:
The state of the light (glowing or not glowing) is whatever it is when it is receiving electricity 1/2 the time and no electricity 1/2 the time. : When the intervals get small enough, it no longer matters whether it is, or is not, receiving electricity at that
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This seems to me like saying that something has no color, and them demanding to know what color it is and declaring it a paradox when no answer an be given that is consistent with my initial contention that it has no color. Am I missing something?
1161:
Once the minimum response time is reached, the iterations will proceed at a speed determined by the apparatus rather than the mathematical series. Within one to two iterations, T≤2 will be achieved and the status of the lamp will be determinate.
684:
I disagree with the use of this series as a "solution" to the problem. Why sum the results? This is not explained, and makes no sense. I think it's a discredit to mathematics to have this "mathematical" solution to the problem on this page.
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ad absurdum argument disproving the concept of supertasks. But it is not enough of a contradiction to do so. Instead, this conflict merely illuminates the incompleteness of the analogy between the mathematical series and the switched lamp.
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When you flip the switch, nothing happens at the light immediately. There is a delay because the voltage at the bulb does not change instantly in response to the change at the switch. You have to calculate how long it takes the signal to
1100:
Keep in mind that the flow of electricity in an a.c. current starts and stops, and reverses direction, repeatedly, but no one considers these states as being "off". A light is not off until the power is off long enough for it to stop
1840:
The whole point of the Knowledge article is to summarize the published literature. It is not to resolve the issue one way or the other. I've replaced that paragraph with Thomson's original language, which is more concise anyway.
1073:
More than than the friction from flicking it on and off an infinite amount of times in such a short span of time would vaporize the switch completely, effectively disconnecting the circuit, the lamp would at the end be off.
949:
A solution is that it is in fact 1/2, because as you get closer to 2 minutes, then the differences between the number of minutes of the time it is on and off rapidly decreases. At the end, it would be blinking, so it is 1/2.
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in a sentence describing Thomson's argument. This is really dubious, since those theories were introduced after Thomson's lamp, so it's reasonable to want a source that makes the connection. Without a source, the links are
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the biggest problem is that within any physical reality, after a while you bump up against quantum consideration and limits of measurement. My conclusion: Time is not a thing that can be divided, time IS a measurement
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I've finally skimmed Thomson's original paper. He says the opposite of this article: that the divergence of the series has nothing to do with the impossibility of the supertask. I'll be rewriting the section soon.
1987:
Thomson is dismissing as irrelevant the distinction between convergence and divergence. This is the opposite position from insisting that the sums of convergent series are more relevant than the sums of divergent
1678:
That's a reasonable interpretation of the situation, although as a logical argument, it seems to beg the question. Is it attributable to a published source? If so, it should be added to the article. (If not, it's
926:
other state at t = 2. You could be tempted to say that because a value for f(2) was not provided, one should take f(2) to be the last state On or Off before t = 2. This is in fact the problem put by Thomson.
1961:
Here, Thomson himself seems to be dismissing as irrelevant these generalized definitions for sums of series as a red herring. As such, there should really be some mention of my simple observations in the
1096:
No, it's on either way, unless it's an LED light. Most others lights remain on for a small interval after the flow of electricity stops. For example, an incandescent light remains on until the filament
2971:
Following Earman and Norman's development (p. 236) in establishing this schedule of switching, we define Thomson's idealized lamp to be ON only during the following time intervals (in minutes):
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there is an asymptote to e.g. y=0, and trying to find the value for y=-1. Another example: what will be the speed of a car at 200 miles further, while having only 100 miles worth of fuel left.
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Ideally we would take a paragraph or two to describe how Benacenaf and Earman & Norman arrive at that conclusion. But for now, sure, any mention of their argument is better than nothing!
840:
The real question (and perceived paradox) is that if an infinite decimal can exist in its entirety as a static object, then why is there not a last digit, or if there is one, what is it.
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1735:=2. That's begging the question. Why is the lamp's state defined only in these time intervals? To answer that question, we already have to explain why the state is undefined for t: -->
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presenting the problem: "But to answer the riddle of the Thompson lamp would be preposterous. It would be tantamount to saying whether the biggest whole number is even or odd!") The
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write, "The lamp is not paradoxical since any (state of the lamp at the 2-minute mark, ON or OFF) would be compatible with the schedule of switching prior to (that time)." p.237
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Just like there's a formula to quickly find the sum of all integers to 10,000 there's one for an infinite series that converges. Click on the word sum in the article (or below) --
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Remember that the whole point of the article is to demonstrate a supposed contradiction arising from infinitely many changes of states occurring in a finite interval:
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on Knowledge. If you would like to support the project, please visit the project page, where you can get more details on how you can help, and where you can join the
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John Earman and John Norton (1996) "Infinite Pains: The Trouble with Supertasks. In Benacerraf and his Critics," Adam Morton and Stephen P. Stich (Eds.), p.231-261.
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Original research? It's only a single paragraph, four sentences long stating the obvious. It seems very unlikely that anyone would challenge these observations.
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of mass, then the speed of light can be achieved. I don't know if this affects the calculations in any way or not, I just thought this would be good to add.
899:
it starts off. This is what the description of the procedure determines, the integral of the function from t=0 to t=2, not the value of the function at t=2. --
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Seeing, or not, an analogy with Grandi’series is a matter of taste. It may, or may not, help think about Thomson’s lamp, but it is a quite different problem.
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has three problems. It mentions the limit of a series, which is non-standard terminology. Sequences have limits; series have sums. It links "logically" to
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Would it suffice to quote Earman and Norman: "The lamp is not paradoxical since any would be compatible with the schedule of switching prior to ." p.237
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Good point, time increments for change can be devided but not time itself. I think thats a problem left unresolved on some of the other paradox pages. --
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principle. There was no mention of any transition times between the ON and OFF states, so I assume there are none. It just makes sense in this context.
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So, this was not meant to be an exercise in electrical engineering. The idealized lamp and switch are part of a thought experiment to demonstrate a
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I wonder if the the reply to the theoretical problem is rather "undecidable" than "indeterminate". It seems to be an unanswerable decision problem.
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The summation does not converge. It is then a falsehood to say that it is equal to some real number S. And all things follow from a falsehood. --
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Notice that every element of each of these intervals is less than 2. Therefore, the state of Thomson's Lamp is unspecified or undefined for time
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that conclusion from the stated problem (accelerated flickering) is much more interesting than merely proclaiming that something has no color.
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The solution would seem to lie in the division of the infinite by the infintesimal, which I'm not sure has a defined meaning in mathematics.
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I think this question is the same as asking: what is the limit of sin(1/x) when x goes to 0? The answer is: it doesn't exist. See this link:
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If the second question is unambiguous as regards "state", the real answer is again "no"; the theoretical answer is a little more difficult.
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If Thompson did indeed phrase the main question as stated, "Is the lamp switch on or off after exactly two minutes?", the answer is "no".
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1736:=2. Well, once we've done that, there's no point in messing about with the intervals. They don't add any insight; they're just filler.
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and it is undefined at the 2-minute mark. So, no contradiction can be obtained by simply making the additional assumption that
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within the published literature. Is there a published work that defines the lamp's state using these half-open intervals?
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The way Grandi’s series is articulated in this article, there is no n. The article then goes on to discuss “when n…”
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Another problem is the word "Therefore". You say that the lamp's state is defined only in these time intervals, and
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It's certainly related, but not the same. Again, the metaphysical problem does not so easily reduce to mathematics.
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However, since the problem is couched in real-world terms of the 1950s, perhaps a practical answer is called for.
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riddle, of course, is not to find the right answer, but to understand what exactly is wrong with the question. ~
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period of time. (In reality the bulb stops flickering because of the lack of cool down time for the filliment.)
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3184:{\displaystyle [1,{\frac {3}{2}}),[{\frac {7}{4}},{\frac {15}{8}}),[{\frac {31}{16}},{\frac {63}{32}}),\cdots }
1625:{\displaystyle [1,{\frac {3}{2}}),[{\frac {7}{4}},{\frac {15}{8}}),[{\frac {31}{16}},{\frac {63}{32}}),\cdots }
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1870:"Are there other consistent ways to describe the final state of Thomson’s lamp in spite of the missing limit?
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In the real world, the switch is "broken", no longer a switch, having been employed way outside of its spec.
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solution, another is that any value between 0 and 1 can be attained, or all at the same time. The paradox is
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when the delay will be longer than the time between toggles of the switch, and the experiment will crash.
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In the theoretical model, the dichotomy is also broken, not a number 0 or 1 but some other escaped animal.
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At one minute, he believes he has the right answer. Thirty seconds later he has revised his opinion ...
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I'll edit the prose again, this time using the "sum of series" terminology and preserving the link to
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It seems that, as to the exact state of the lamp now that two minutes are up, we remain in the dark.
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Consider a mathematician who has two minutes to solve a problem regarding a mathematical model which
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So, the biggest problem with the argument is the inability of time to be divided by the infinite.
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3069:{\displaystyle [0,1),[{\frac {3}{2}},{\frac {7}{4}}),[{\frac {15}{8}},{\frac {31}{16}}),\cdots }
1506:{\displaystyle [0,1),[{\frac {3}{2}},{\frac {7}{4}}),[{\frac {15}{8}},{\frac {31}{16}}),\cdots }
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We assume that the transitions on switching from one state to another are instantaneous.
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Thomson's Lamp can be defined to be ON only in the following time intervals (in minutes):
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is also original research, as it seems to imply a connection which is again unsupported.
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The exact 2 minute mark occurs instantly - i.e. in an infinitely small length of time
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is possible at 2. In the original lamp problem, assuming continuity is impossible.
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There is a reference to a paper by Benacerraf on this aspect of the "paradox" here:
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The unending series in the brackets is exactly the same as the original series
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mathematicians. But Thomson's meaning is clear enough, since he cites Hardy's
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switching on or off before the 2-minute mark. Likewise if we were to assume
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Quantum physics aside, there are two mathematical aspects to this problem:
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Whereas, it can be defined to be OFF only in the following time intervals:
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conflict comes when we try to map this onto the physical lamp and switch.
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You also have a reference to the original paper in your References section
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and thereafter. What is that non-changing state? The paradox remains. --
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series has no defined sum (the limit does not exist)." Do you disagree?
107:, a collaborative effort to improve the coverage of content related to
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At 2 minutes the lamp will be switching on and off an an infinite rate
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The Unreasonable Effectiveness of Mathematics in the Natural Sciences
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Notice that every element of each of these intervals is less than
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We can represent the schedule of switching by a partial function
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And we define it to be OFF only during the following intervals:
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That's progress! Feel free to integrate them into the article.
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Seems a bit "hand-wavy" to say the least. The partial function
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fact, this manipulation can be rigorously justified: there are
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1221:, additional to the bibliographical note in the first sentence.
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The fuse would blow if one tried to turn on and off that fast.
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of all these progressively smaller times is exactly two minutes
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Is the lamp's status defined at all times prior to @ minutes?
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Maybe there are alternate realities with different logic.
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http://www.math.washington.edu/~conroy/general/sin1overx/
2536:. Since we cannot prove it, there is no contradiction.
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will be undefined. Therefore, if we assign a value of
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The state of Thomson's Lamp is simply unspecified for
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Seeing that the article has been tagged as relying on
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1315:(includes bibliography, but not inline citations).
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2001:Anyway, what observations do you want mentioned?
1904:Re: Mathematical analogy proof based on falsehood
3946:, you were pressing the switch like a demon, at
3798:write out the series of the intervals defining
3920:comes to you unhurriedly but steadily. Before
2378:Left unspecified or undefined is the value of
1931:generalized definitions for the sums of series
1217:I made a small change to the lede to link to
226:Benacerraf makes that point as well. See the
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1145:Incomplete Analogy to Mathematical Series
612:{\displaystyle S=1-(1-1+1-1+1-1+\cdots )}
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2040:We are talking about a partial function
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49:
117:about philosophy content on Knowledge.
532:{\displaystyle S=1-1+1-1+1-1+\cdots }
7:
101:This article is within the scope of
2462:Even if we add the assumption that
1877:Stanford Encyclopedia of Philosophy
1734:, the state is undefined for t: -->
38:It is of interest to the following
4107:Low-importance Philosophy articles
1190:resembling a real-world situation.
14:
3998:, you are forced to define it at
3655:. On this schedule of switching,
542:The series can be rearranged as:
3600:is the elapsed time in minutes.
2960:A Non-Paradoxical Interpretation
2618:is well defined on the interval
1246:Mathematical universe hypothesis
638:converge and so this algebra of
123:Knowledge:WikiProject Philosophy
88:
78:
51:
20:
4102:Start-Class Philosophy articles
3894:is not always less than 2, and
143:This article has been rated as
126:Template:WikiProject Philosophy
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1:
4117:Low-importance logic articles
4080:2601:240:E300:51C0:0:0:0:D619
4034:02:39, 26 November 2016 (UTC)
2964:On the Thomson Lamp Paradox,
1369:15:36, 23 February 2016 (UTC)
1174:14:20, 25 December 2011 (UTC)
909:15:57, 12 November 2009 (UTC)
893:17:33, 11 November 2009 (UTC)
861:00:35, 17 February 2015 (UTC)
206:Task is implicitly impossible
4049:06:54, 3 February 2021 (UTC)
3794:If you sit at your desk and
1334:15:32, 12 January 2014 (UTC)
1140:00:46, 12 January 2014 (UTC)
1117:18:24, 11 January 2014 (UTC)
1090:00:19, 9 December 2011 (UTC)
1050:00:48, 12 January 2014 (UTC)
1027:18:26, 11 January 2014 (UTC)
1009:03:31, 3 November 2010 (UTC)
832:An infinite decimal problem?
676:00:56, 19 January 2008 (UTC)
416:19:46, 13 January 2007 (UTC)
407:11:00, 13 January 2007 (UTC)
246:01:26, 29 October 2010 (UTC)
221:09:50, 28 October 2010 (UTC)
4088:03:02, 30 August 2023 (UTC)
1308:, chapter 8 (pp. 143–159),
1069:12:45, 28 August 2011 (UTC)
397:04:50, 2 January 2007 (UTC)
381:17:50, 28 August 2008 (UTC)
332:05:38, 3 January 2006 (UTC)
4138:
4112:Start-Class logic articles
1278:03:41, 13 March 2013 (UTC)
701:21:18, 16 April 2008 (UTC)
442:) 19:33, 12 September 2007
315:eventually occur anyway.
260:(inserted for readability
149:project's importance scale
4122:Logic task force articles
4069:21:59, 9 March 2016 (UTC)
2944:20:36, 9 March 2016 (UTC)
2910:19:53, 9 March 2016 (UTC)
2875:05:50, 9 March 2016 (UTC)
2845:02:03, 9 March 2016 (UTC)
2771:You might have a look at:
2755:23:50, 8 March 2016 (UTC)
2732:23:03, 8 March 2016 (UTC)
2565:21:58, 8 March 2016 (UTC)
2549:13:40, 8 March 2016 (UTC)
2011:23:37, 7 March 2016 (UTC)
1975:13:29, 7 March 2016 (UTC)
1947:21:04, 4 March 2016 (UTC)
1918:19:56, 4 March 2016 (UTC)
1851:21:54, 8 March 2016 (UTC)
1820:19:41, 8 March 2016 (UTC)
1746:23:31, 7 March 2016 (UTC)
1714:04:10, 5 March 2016 (UTC)
1693:21:08, 4 March 2016 (UTC)
1673:18:20, 4 March 2016 (UTC)
1224:One is one and one is one
988:09:31, 12 June 2010 (UTC)
822:14:22, 15 July 2008 (UTC)
791:00:25, 15 July 2008 (UTC)
774:18:46, 14 July 2008 (UTC)
743:09:27, 12 June 2010 (UTC)
718:00:28, 15 July 2008 (UTC)
292:2005 July 3 23:25 (UTC)
274:09:19, 12 June 2010 (UTC)
184:
155:
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73:
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2966:Earman and Norman (1996)
2586:This is a contradiction.
1898:17:44, 7 June 2018 (UTC)
960:19:28, 6 June 2010 (UTC)
660:) 00:46, 19 January 2008
2573:The argument now reads:
2426:{\displaystyle t\geq 2}
2021:No contradiction proven
1656:{\displaystyle t\geq 2}
1395:{\displaystyle t\geq 2}
868:A series or a function?
160:Associated task forces:
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387:Mathematical proof...
365:divided by Beauty?"
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1306:Labyrinths of Reason
1248:and "physically" to
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3965:{\displaystyle t=2}
3939:{\displaystyle t=2}
3913:{\displaystyle t=2}
3846:{\displaystyle t=2}
3236:{\displaystyle t=2}
1937:." is good enough.
965:Yes and no. That's
467:The reasoning that
129:Philosophy articles
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1302:William Poundstone
1266:Thought experiment
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114:general discussion
34:content assessment
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2976:
2975:
2962:
2701:
2700:
2681:
2680:
2652:
2651:
2620:
2619:
2600:
2599:
2503:
2502:
2464:
2463:
2435:
2434:
2409:
2408:
2380:
2379:
2358:
2357:
2246:
2235:
2234:
2130:
2115:
2094:
2093:
2042:
2041:
2023:
1936:
1906:
1639:
1638:
1525:
1524:
1413:
1412:
1404:
1378:
1377:
1350:
1341:
1294:
1288:
1285:
1250:Digital physics
1239:
1237:Digital physics
1184:
1147:
1122:Please observe
1075:
1057:
1032:Please observe
996:
980:
947:
932:Dominique Meeùs
916:
885:195.235.199.101
878:
870:
842:
834:
751:
735:
547:
546:
479:
478:
465:
389:
266:
256:
231:
208:
165:
128:
125:
122:
119:
118:
94:
89:
87:
67:
61:
32:on Knowledge's
29:
12:
11:
5:
4135:
4133:
4125:
4124:
4119:
4114:
4109:
4104:
4094:
4093:
4075:
4072:
4061:Danchristensen
4058:
4056:
4055:
4054:
4053:
4052:
4051:
4013:
4010:
4007:
3987:
3984:
3981:
3961:
3958:
3955:
3935:
3932:
3929:
3909:
3906:
3903:
3883:
3862:
3842:
3839:
3836:
3816:
3813:
3810:
3807:
3774:
3771:
3768:
3765:
3762:
3742:
3739:
3736:
3733:
3713:
3693:
3673:
3670:
3667:
3664:
3644:
3641:
3638:
3635:
3632:
3612:
3589:
3578:
3577:
3564:
3559:
3556:
3553:
3548:
3545:
3540:
3535:
3532:
3527:
3524:
3521:
3516:
3513:
3508:
3503:
3500:
3495:
3492:
3489:
3484:
3481:
3476:
3473:
3470:
3467:
3464:
3461:
3458:
3450:
3443:
3440:
3439:
3436:
3433:
3430:
3425:
3422:
3417:
3412:
3409:
3404:
3401:
3398:
3393:
3390:
3385:
3380:
3377:
3372:
3369:
3366:
3363:
3360:
3357:
3354:
3351:
3348:
3345:
3342:
3334:
3327:
3324:
3323:
3321:
3316:
3313:
3310:
3307:
3304:
3281:
3278:
3275:
3272:
3269:
3266:
3262:
3258:
3255:
3232:
3229:
3226:
3206:
3192:
3191:
3180:
3177:
3174:
3169:
3166:
3161:
3156:
3153:
3148:
3145:
3142:
3137:
3134:
3129:
3124:
3121:
3116:
3113:
3110:
3105:
3102:
3097:
3094:
3091:
3077:
3076:
3065:
3062:
3059:
3054:
3051:
3046:
3041:
3038:
3033:
3030:
3027:
3022:
3019:
3014:
3009:
3006:
3001:
2998:
2995:
2992:
2989:
2986:
2983:
2961:
2958:
2957:
2956:
2955:
2954:
2953:
2952:
2951:
2950:
2949:
2948:
2947:
2946:
2921:
2920:
2919:
2918:
2917:
2916:
2915:
2914:
2913:
2912:
2902:Danchristensen
2898:
2886:
2885:
2884:
2883:
2882:
2881:
2880:
2879:
2878:
2877:
2854:
2853:
2852:
2851:
2850:
2849:
2848:
2847:
2837:Danchristensen
2826:
2825:
2824:
2823:
2822:
2821:
2820:
2819:
2818:
2817:
2802:
2801:
2800:
2799:
2798:
2797:
2796:
2795:
2794:
2793:
2779:
2778:
2777:
2776:
2775:
2774:
2773:
2772:
2762:
2761:
2760:
2759:
2758:
2757:
2737:
2736:
2735:
2734:
2724:Danchristensen
2720:
2708:
2688:
2668:
2665:
2662:
2659:
2639:
2636:
2633:
2630:
2627:
2607:
2593:
2592:
2591:
2590:
2589:
2588:
2577:
2576:
2575:
2574:
2568:
2567:
2541:Danchristensen
2525:
2522:
2519:
2516:
2513:
2510:
2486:
2483:
2480:
2477:
2474:
2471:
2448:
2445:
2442:
2422:
2419:
2416:
2396:
2393:
2390:
2387:
2377:
2375:
2374:
2361:
2356:
2353:
2350:
2345:
2342:
2337:
2332:
2329:
2324:
2321:
2318:
2313:
2310:
2305:
2300:
2297:
2292:
2289:
2286:
2281:
2278:
2273:
2270:
2267:
2264:
2261:
2258:
2255:
2247:
2240:
2237:
2236:
2233:
2230:
2227:
2222:
2219:
2214:
2209:
2206:
2201:
2198:
2195:
2190:
2187:
2182:
2177:
2174:
2169:
2166:
2163:
2160:
2157:
2154:
2151:
2148:
2145:
2142:
2139:
2131:
2124:
2121:
2120:
2118:
2113:
2110:
2107:
2104:
2101:
2089:
2075:
2072:
2069:
2066:
2063:
2060:
2056:
2052:
2049:
2038:
2037:
2036:
2035:
2022:
2019:
2018:
2017:
2016:
2015:
2014:
2013:
1994:
1993:
1992:
1991:
1990:
1989:
1980:
1979:
1978:
1977:
1967:Danchristensen
1963:
1956:
1955:
1954:
1953:
1934:
1910:Danchristensen
1905:
1902:
1901:
1900:
1890:Danchristensen
1885:
1884:
1880:
1879:
1872:
1871:
1867:
1866:
1862:
1861:
1860:
1859:
1858:
1857:
1856:
1855:
1854:
1853:
1829:
1828:
1827:
1826:
1825:
1824:
1823:
1822:
1812:Danchristensen
1808:
1794:
1793:
1792:
1791:
1790:
1789:
1788:
1787:
1786:
1785:
1770:
1769:
1768:
1767:
1766:
1765:
1764:
1763:
1753:
1752:
1751:
1750:
1749:
1748:
1728:
1719:
1718:
1717:
1716:
1706:Danchristensen
1702:
1696:
1695:
1665:Danchristensen
1652:
1649:
1646:
1635:
1634:
1633:
1632:
1621:
1618:
1615:
1610:
1607:
1602:
1597:
1594:
1589:
1586:
1583:
1578:
1575:
1570:
1565:
1562:
1557:
1554:
1551:
1546:
1543:
1538:
1535:
1532:
1516:
1515:
1514:
1513:
1502:
1499:
1496:
1491:
1488:
1483:
1478:
1475:
1470:
1467:
1464:
1459:
1456:
1451:
1446:
1443:
1438:
1435:
1432:
1429:
1426:
1423:
1420:
1403:
1391:
1388:
1385:
1374:
1340:
1337:
1317:
1316:
1284:
1281:
1257:. The link to
1238:
1235:
1222:
1216:
1215:
1211:
1206:
1204:
1202:
1191:
1183:
1180:
1178:
1146:
1143:
1120:
1119:
1109:71.109.149.173
1106:
1102:
1098:
1082:161.49.249.254
1056:
1055:Off either way
1053:
1030:
1029:
1019:71.109.149.173
1016:
1001:69.153.116.124
995:
992:
991:
990:
946:
943:
915:
912:
869:
866:
833:
830:
828:
826:
825:
794:
793:
750:
747:
746:
745:
721:
720:
681:
679:
678:
630:which implies
620:
619:
608:
605:
602:
599:
596:
593:
590:
587:
584:
581:
578:
575:
572:
569:
566:
563:
560:
557:
554:
540:
539:
528:
525:
522:
519:
516:
513:
510:
507:
504:
501:
498:
495:
492:
489:
486:
464:
461:
460:
459:
458:
457:
445:
444:
388:
385:
359:
358:
354:
353:
343:
342:
335:
334:
307:
304:
302:
301:
281:
255:
250:
213:220.244.80.111
207:
204:
201:
200:
197:
196:
193:
192:
189:
188:
183:
173:
172:
170:
168:
162:
161:
153:
152:
145:Low-importance
141:
135:
134:
132:
100:
99:
83:
71:
70:
68:Low‑importance
56:
44:
43:
37:
26:
13:
10:
9:
6:
4:
3:
2:
4134:
4123:
4120:
4118:
4115:
4113:
4110:
4108:
4105:
4103:
4100:
4099:
4097:
4090:
4089:
4085:
4081:
4073:
4071:
4070:
4066:
4062:
4050:
4046:
4042:
4037:
4036:
4035:
4031:
4027:
4011:
4008:
4005:
3985:
3982:
3979:
3959:
3956:
3953:
3933:
3930:
3927:
3907:
3904:
3901:
3881:
3860:
3840:
3837:
3834:
3811:
3805:
3797:
3793:
3792:
3791:
3790:
3789:
3786:
3769:
3766:
3763:
3737:
3731:
3711:
3691:
3668:
3662:
3639:
3636:
3633:
3610:
3603:The function
3601:
3587:
3554:
3546:
3543:
3538:
3533:
3530:
3522:
3514:
3511:
3506:
3501:
3498:
3490:
3482:
3479:
3474:
3471:
3462:
3459:
3456:
3441:
3431:
3423:
3420:
3415:
3410:
3407:
3399:
3391:
3388:
3383:
3378:
3375:
3367:
3361:
3358:
3355:
3346:
3343:
3340:
3325:
3319:
3314:
3308:
3302:
3295:
3294:
3293:
3276:
3273:
3270:
3256:
3253:
3244:
3230:
3227:
3224:
3204:
3195:
3178:
3175:
3167:
3164:
3159:
3154:
3151:
3143:
3135:
3132:
3127:
3122:
3119:
3111:
3103:
3100:
3095:
3092:
3082:
3081:
3080:
3063:
3060:
3052:
3049:
3044:
3039:
3036:
3028:
3020:
3017:
3012:
3007:
3004:
2996:
2990:
2987:
2984:
2974:
2973:
2972:
2969:
2967:
2959:
2945:
2941:
2937:
2933:
2932:
2931:
2930:
2929:
2928:
2927:
2926:
2925:
2924:
2923:
2922:
2911:
2907:
2903:
2899:
2896:
2895:
2894:
2893:
2892:
2891:
2890:
2889:
2888:
2887:
2876:
2872:
2868:
2864:
2863:
2862:
2861:
2860:
2859:
2858:
2857:
2856:
2855:
2846:
2842:
2838:
2834:
2833:
2832:
2831:
2830:
2829:
2828:
2827:
2815:
2812:
2811:
2810:
2809:
2808:
2807:
2806:
2805:
2804:
2803:
2792:
2789:
2788:
2787:
2786:
2785:
2784:
2783:
2782:
2781:
2780:
2770:
2769:
2768:
2767:
2766:
2765:
2764:
2763:
2756:
2752:
2748:
2743:
2742:
2741:
2740:
2739:
2738:
2733:
2729:
2725:
2721:
2706:
2686:
2663:
2657:
2634:
2631:
2628:
2605:
2597:
2596:
2595:
2594:
2587:
2583:
2582:
2581:
2580:
2579:
2578:
2572:
2571:
2570:
2569:
2566:
2562:
2558:
2553:
2552:
2551:
2550:
2546:
2542:
2537:
2523:
2520:
2514:
2508:
2500:
2484:
2481:
2475:
2469:
2460:
2446:
2443:
2440:
2420:
2417:
2414:
2391:
2385:
2351:
2343:
2340:
2335:
2330:
2327:
2319:
2311:
2308:
2303:
2298:
2295:
2287:
2279:
2276:
2271:
2268:
2259:
2256:
2253:
2238:
2228:
2220:
2217:
2212:
2207:
2204:
2196:
2188:
2185:
2180:
2175:
2172:
2164:
2158:
2155:
2152:
2143:
2140:
2137:
2122:
2116:
2111:
2105:
2099:
2092:
2091:
2090:
2087:
2070:
2067:
2064:
2050:
2047:
2034:
2030:
2029:
2028:
2027:
2026:
2020:
2012:
2008:
2004:
2000:
1999:
1998:
1997:
1996:
1995:
1986:
1985:
1984:
1983:
1982:
1981:
1976:
1972:
1968:
1964:
1960:
1959:
1958:
1957:
1950:
1949:
1948:
1944:
1940:
1932:
1927:
1922:
1921:
1920:
1919:
1915:
1911:
1903:
1899:
1895:
1891:
1887:
1886:
1882:
1881:
1878:
1874:
1873:
1869:
1868:
1864:
1863:
1852:
1848:
1844:
1839:
1838:
1837:
1836:
1835:
1834:
1833:
1832:
1831:
1830:
1821:
1817:
1813:
1809:
1806:
1802:
1801:
1800:
1799:
1798:
1797:
1796:
1795:
1784:
1780:
1779:
1778:
1777:
1776:
1775:
1774:
1773:
1772:
1771:
1761:
1760:
1759:
1758:
1757:
1756:
1755:
1754:
1747:
1743:
1739:
1733:
1729:
1725:
1724:
1723:
1722:
1721:
1720:
1715:
1711:
1707:
1703:
1700:
1699:
1698:
1697:
1694:
1690:
1686:
1682:
1677:
1676:
1675:
1674:
1670:
1666:
1650:
1647:
1644:
1619:
1616:
1608:
1605:
1600:
1595:
1592:
1584:
1576:
1573:
1568:
1563:
1560:
1552:
1544:
1541:
1536:
1533:
1523:
1522:
1521:
1520:
1519:
1500:
1497:
1489:
1486:
1481:
1476:
1473:
1465:
1457:
1454:
1449:
1444:
1441:
1433:
1427:
1424:
1421:
1411:
1410:
1409:
1408:
1407:
1389:
1386:
1383:
1373:
1370:
1366:
1362:
1358:
1354:
1345:
1336:
1335:
1331:
1327:
1323:
1314:
1311:
1307:
1303:
1300:
1299:
1298:
1293:
1282:
1280:
1279:
1275:
1271:
1267:
1262:
1260:
1256:
1251:
1247:
1243:
1236:
1234:
1233:
1229:
1225:
1220:
1212:
1208:
1199:
1196:
1193:
1189:
1181:
1179:
1176:
1175:
1171:
1167:
1163:
1159:
1155:
1151:
1144:
1142:
1141:
1137:
1133:
1129:
1125:
1118:
1114:
1110:
1107:
1103:
1099:
1095:
1094:
1093:
1091:
1087:
1083:
1079:
1071:
1070:
1066:
1062:
1054:
1052:
1051:
1047:
1043:
1039:
1035:
1028:
1024:
1020:
1017:
1013:
1012:
1011:
1010:
1006:
1002:
993:
989:
985:
983:
977:
972:
968:
964:
963:
962:
961:
957:
953:
944:
942:
941:
937:
933:
927:
923:
919:
913:
911:
910:
906:
902:
901:84.127.78.170
896:
894:
890:
886:
882:
874:
867:
865:
862:
858:
854:
850:
846:
838:
831:
829:
823:
819:
815:
814:72.226.66.230
811:
805:
801:
796:
795:
792:
788:
784:
779:
778:
777:
775:
771:
767:
766:128.227.16.53
763:
755:
748:
744:
740:
738:
732:
727:
723:
722:
719:
715:
711:
706:
705:
704:
702:
698:
694:
690:
682:
677:
673:
669:
664:
663:
662:
659:
655:
651:
647:
641:
635:
633:
629:
626:. This means
625:
603:
600:
597:
594:
591:
588:
585:
582:
579:
576:
573:
570:
567:
561:
558:
555:
552:
545:
544:
543:
526:
523:
520:
517:
514:
511:
508:
505:
502:
499:
496:
493:
490:
487:
484:
477:
476:
475:
472:
470:
462:
456:
453:
449:
448:
447:
446:
441:
437:
433:
432:201.53.83.199
429:
424:
420:
419:
418:
417:
414:
409:
408:
405:
399:
398:
395:
386:
384:
382:
378:
374:
373:84.92.193.137
370:
362:
356:
355:
351:
350:
349:
346:
341:
337:
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333:
330:
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323:
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308:
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291:
286:
282:
279:
277:
275:
271:
269:
263:
254:
251:
249:
247:
243:
239:
238:128.113.89.57
235:
229:
224:
222:
218:
214:
205:
187:
179:
175:
174:
171:
169:
164:
163:
158:
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140:
137:
136:
133:
116:
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110:
106:
105:
97:
86:
84:
81:
77:
76:
72:
65:
60:
57:
54:
50:
45:
41:
35:
27:
23:
18:
17:
4077:
4057:
4041:Double sharp
3795:
3787:
3602:
3579:
3245:
3196:
3193:
3078:
2970:
2963:
2584:
2538:
2498:
2461:
2376:
2088:
2039:
2031:
2024:
1952:divergent.'"
1925:
1907:
1805:mathematical
1804:
1781:
1731:
1636:
1517:
1405:
1351:— Preceding
1346:
1342:
1321:
1318:
1305:
1286:
1263:
1240:
1213:
1209:
1200:
1197:
1194:
1187:
1185:
1177:
1164:
1160:
1156:
1152:
1148:
1121:
1076:— Preceding
1072:
1061:220.255.1.82
1058:
1031:
997:
981:
970:
966:
952:24.1.201.172
948:
928:
924:
920:
917:
897:
875:
871:
843:— Preceding
839:
835:
827:
804:Zeno machine
756:
752:
736:
725:
693:70.150.87.29
683:
680:
639:
636:
631:
627:
623:
621:
541:
473:
468:
466:
410:
400:
390:
363:
360:
347:
344:
321:
317:
309:
306:
303:
287:
283:
280:
267:
259:
257:
252:
225:
209:
144:
112:
102:
40:WikiProjects
3292:such that:
2086:such that:
1124:WP:NOTFORUM
1034:WP:NOTFORUM
994:Speed Limit
879:—Preceding
808:—Preceding
760:—Preceding
726:established
687:—Preceding
650:163.1.62.24
644:—Preceding
426:—Preceding
367:—Preceding
232:—Preceding
30:Start-class
4096:Categories
2791:Berresford
2679:is either
1357:SputnikIan
1313:0385242611
1268:. Thanks,
1188:starts out
1132:Paradoctor
1130:. Thanks.
1042:Paradoctor
1040:. Thanks.
230:article.
120:Philosophy
109:philosophy
59:Philosophy
1732:therefore
1326:Ningauble
1242:This edit
1219:supertask
849:PenyKarma
724:It is an
640:S = 1 - S
628:S = 1 - S
463:Incorrect
228:Supertask
3796:manually
2936:Melchoir
2867:Melchoir
2747:Melchoir
2557:Melchoir
2003:Melchoir
1962:article.
1939:Melchoir
1843:Melchoir
1738:Melchoir
1685:Melchoir
1365:contribs
1353:unsigned
1304:, 1988,
1270:Melchoir
1182:OR maybe
1101:glowing.
1078:unsigned
978:dixit. (
945:Solution
881:unsigned
857:contribs
845:unsigned
810:unsigned
783:Melchoir
762:unsigned
733:dixit. (
710:Melchoir
689:unsigned
668:Melchoir
658:contribs
646:unsigned
452:Melchoir
440:contribs
428:unsigned
413:Melchoir
404:Melchoir
394:Melchoir
369:unsigned
264:dixit. (
234:unsigned
1988:series.
1402:minutes
1292:primary
1105:moment.
1015:travel.
285:to me.
223:gabe76
147:on the
4026:Roland
3580:where
3446:(OFF)
2243:(OFF)
1166:DuardF
1097:cools.
976:Rursus
806:page.
731:Rursus
411:Done!
340:RickO5
329:JimWae
312:RickO5
290:JimWae
262:Rursus
36:scale.
3330:(ON)
2816:p.236
2127:(ON)
1663:. --
1128:WP:OR
1038:WP:OR
632:S = ½
469:S = ½
186:Logic
64:Logic
4084:talk
4065:talk
4045:talk
4030:talk
2940:talk
2906:talk
2871:talk
2841:talk
2751:talk
2728:talk
2561:talk
2545:talk
2499:last
2444:<
2407:for
2007:talk
1971:talk
1943:talk
1914:talk
1894:talk
1847:talk
1816:talk
1742:talk
1710:talk
1689:talk
1669:talk
1361:talk
1330:talk
1322:real
1310:ISBN
1274:talk
1228:talk
1170:talk
1136:talk
1126:and
1113:talk
1086:talk
1065:talk
1046:talk
1036:and
1023:talk
1005:talk
982:bork
956:talk
936:talk
905:talk
889:talk
853:talk
818:talk
787:talk
770:talk
737:bork
714:talk
697:talk
672:talk
654:talk
436:talk
377:talk
296:The
268:bork
242:talk
217:talk
3724:to
3704:or
3453:if
3337:if
3243:.
2699:or
2459:.
2433:or
2250:if
2134:if
1683:.)
986:!)
971:not
967:one
741:!)
634:."
345:--
298:sum
272:!)
139:Low
4098::
4086:)
4067:)
4059:--
4047:)
4032:)
3555:⋯
3547:32
3544:63
3534:16
3531:31
3512:15
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3168:32
3165:63
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2942:)
2908:)
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2835:--
2753:)
2730:)
2722:--
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2418:≥
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2344:32
2341:63
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656:•
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438:•
379:)
327:--
310:--
244:)
219:)
166:/
62::
4082:(
4063:(
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4012:2
4009:=
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3812:t
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3806:f
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3770:2
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559:1
556:=
553:S
524:+
521:1
515:1
512:+
509:1
503:1
500:+
497:1
491:1
488:=
485:S
434:(
375:(
276:)
240:(
215:(
151:.
42::
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