On Wed, 2010-09-22 at 12:19 -0400, John F. Sowa wrote:
> On 9/22/2010 10:56 AM, Alex Shkotin wrote:
> > (02)
> Those misguided mathematicians who tried to eliminate all diagrams
> from mathematics were philosophically confused and pedagogically
> disastrous. One of the worst offenders was Dieudonné, who was
> a hypocrite.
> He wrote a textbook on geometry that did not contain a single
> diagram. But in one of his lectures, he got stuck in the middle
> of a proof. He went to the side of the blackboard, drew a
> diagram (which he kept hidden from the audience), erased the
> diagram, and continued the proof.
Isn't the turning to the blackboard episode been attributed to several
I first heard a similar story about Norbert Weiner.
(look for Recollections of a Chinese Physicist by C.K. Jen (1990)) (07)
Of course, it may have been a practice of time. ;-) (08)
Hope you are having a great day! (09)
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