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byrnema comments on No One Knows What Science Doesn't Know - Less Wrong

38 Post author: Eliezer_Yudkowsky 25 October 2007 11:47PM

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Comment author: byrnema 07 May 2010 12:57:31PM *  1 point [-]

"You do not really understand something unless you can explain it to your grandmother"!?

This was probably said by Feynman. I'm pretty sure because I have an auditory memory of him saying it in a video ... but I can't remember which one, and wonder if perhaps I read it after all in his Lectures.

Comment author: [deleted] 19 November 2011 08:18:52PM 2 points [-]

IIRC, in the Lectures he says “to a freshman” not “to your grandmother”. It allegedly was Einstein who said “to your grandmother” (and Rutherford said “to a bartender”, and [someone else] said “to [someone else]” and so on).