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- Thomsons_lamp abstract "Thomson's lamp is a philosophical puzzle that is a variation on Zeno's paradoxes. It was devised in 1954 by British philosopher James F. Thomson, who also coined the term supertask.Consider a lamp with a toggle switch. Flicking the switch once turns the lamp on. Another flick will turn the lamp off. Now suppose that there is a being able to perform the following task: starting a timer, he turns the lamp on. At the end of one minute, he turns it off. At the end of another half minute, he turns it on again. At the end of another quarter of a minute, he turns it off. At the next eighth of a minute, he turns it on again, and he continues thus, flicking the switch each time after waiting exactly one-half the time he waited before flicking it previously. The sum of this infinite series of time intervals is exactly two minutes.The following question is then considered:Is the lamp on or off at two minutes?Thomson used this thought experiment to analyze the possibility of a supertask, which is the completion of an infinite number of tasks. Thomson reasoned that the supertask of the lamp creates a contradiction. 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 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. By reductio ad absurdum, the lamp supertask is impossible to perform.".
- Thomsons_lamp wikiPageExternalLink books?id=LQEnRFmeOu4C&pg=PA209.
- Thomsons_lamp wikiPageExternalLink books?id=PV98odlvq4kC&pg=PA22.
- Thomsons_lamp wikiPageID "1240997".
- Thomsons_lamp wikiPageLength "6147".
- Thomsons_lamp wikiPageOutDegree "22".
- Thomsons_lamp wikiPageRevisionID "708224062".
- Thomsons_lamp wikiPageWikiLink Category:Fictional_lamps.
- Thomsons_lamp wikiPageWikiLink Category:Paradoxes_of_infinity.
- Thomsons_lamp wikiPageWikiLink Category:Supertasks.
- Thomsons_lamp wikiPageWikiLink Cesàro_summation.
- Thomsons_lamp wikiPageWikiLink Grandis_series.
- Thomsons_lamp wikiPageWikiLink Integer.
- Thomsons_lamp wikiPageWikiLink James_F._Thomson_(philosopher).
- Thomsons_lamp wikiPageWikiLink Limit_of_a_sequence.
- Thomsons_lamp wikiPageWikiLink List_of_paradoxes.
- Thomsons_lamp wikiPageWikiLink Puzzle.
- Thomsons_lamp wikiPageWikiLink Reductio_ad_absurdum.
- Thomsons_lamp wikiPageWikiLink Ross–Littlewood_paradox.
- Thomsons_lamp wikiPageWikiLink Sequence.
- Thomsons_lamp wikiPageWikiLink Series_(mathematics).
- Thomsons_lamp wikiPageWikiLink Supertask.
- Thomsons_lamp wikiPageWikiLink Switch.
- Thomsons_lamp wikiPageWikiLink Thought_experiment.
- Thomsons_lamp wikiPageWikiLink Zeno_machine.
- Thomsons_lamp wikiPageWikiLink Zenos_paradoxes.
- Thomsons_lamp wikiPageWikiLinkText "Mathematical series analogy".
- Thomsons_lamp wikiPageWikiLinkText "Thomson's lamp".
- Thomsons_lamp wikiPageUsesTemplate Template:Cite_book.
- Thomsons_lamp wikiPageUsesTemplate Template:Cite_journal.
- Thomsons_lamp wikiPageUsesTemplate Template:More_footnotes.
- Thomsons_lamp wikiPageUsesTemplate Template:Reflist.
- Thomsons_lamp subject Category:Fictional_lamps.
- Thomsons_lamp subject Category:Paradoxes_of_infinity.
- Thomsons_lamp subject Category:Supertasks.
- Thomsons_lamp hypernym Puzzle.
- Thomsons_lamp type VideoGame.
- Thomsons_lamp type Concept.
- Thomsons_lamp comment "Thomson's lamp is a philosophical puzzle that is a variation on Zeno's paradoxes. It was devised in 1954 by British philosopher James F. Thomson, who also coined the term supertask.Consider a lamp with a toggle switch. Flicking the switch once turns the lamp on. Another flick will turn the lamp off. Now suppose that there is a being able to perform the following task: starting a timer, he turns the lamp on. At the end of one minute, he turns it off.".
- Thomsons_lamp label "Thomson's lamp".
- Thomsons_lamp sameAs Q6125706.
- Thomsons_lamp sameAs トムソンのランプ.
- Thomsons_lamp sameAs m.04ld79.
- Thomsons_lamp sameAs Q6125706.
- Thomsons_lamp sameAs 湯姆生的燈悖論.
- Thomsons_lamp wasDerivedFrom Thomsons_lamp?oldid=708224062.
- Thomsons_lamp isPrimaryTopicOf Thomsons_lamp.