Carl Sagan Explains the 4th Dimension

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In this video, world famous astronomer and astrophysicist, the great Carl Sagan, explains the 4th dimension. I wonder if Carl knew how funny he was? [7:15]

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Sagan often put in humorous bits into his discussions, for example the dragon in his garage. He claimed that there was a dragon which only he could see and that it emitted flames which were not hot and which only he could see, and added that no one could prove that his dragon did not exist.

By MadScientist (not verified) on 28 Jul 2009 #permalink