Why is 'x' the unknown?

Title:: Why is 'x' the unknown?
Speaker:: Terry Moore
Description:: Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.

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Video Language:: English
Team:: closed TED
Project:: TEDTalks
Duration:: 03:57

	TED2 changed primary url from https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4 to https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4
	TED Translators admin approved Uzbek subtitles for Why is 'x' the unknown?
	TED2 changed primary url from https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4 to https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4
	TED2 changed primary url from https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4 to https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4
	Azizbek Nazarov accepted Uzbek subtitles for Why is 'x' the unknown?
	Azizbek Nazarov edited Uzbek subtitles for Why is 'x' the unknown?
	TED2 changed primary url from https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4 to https://s3.amazonaws.com/ted.conferences/talk/transcript/2012/None/TerryMoore_2012-transcript.mp4
	Nazarbek Nazarov edited Uzbek subtitles for Why is 'x' the unknown?