14 Mar
2013
14 Mar
'13
4:49 p.m.
On 2013-03-14, at 03:06, Casey Ransberger casey.obrien.r@gmail.com wrote:
Speaking of Pythagoras, Alan Kay demos a visual proof for the theorem that's super easy for just about anyone to understand right away using Etoys in his TED talk, which is worth a look:
http://www.ted.com/talks/alan_kay_shares_a_powerful_idea_about_ideas.html
I like a slightly different proof even better, because it doesn't need to rotate the shapes:
http://www.youtube.com/watch?v=md5UBv3pVBE
- Bert -