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Subject: Re: Understanding and Teaching: Who may teach Ada?
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> mathematician co-worker walked me through four years or so of mathematical
> development, in outline form, touching all the key points, although not
> rigorously, over beers at Happy Hour one evening, to explain to me precisely
> why the standard deviation formula used (N-1) instead of N in the
> denominator.  I think it took him about an hour, and I came away with, while
> not a complete understanding, at least a grasp of what was involved.

I remember being convinced by various sources that
Einstein's relativity theories were esoteric stuff
way over my head.  Then I found a copy of

Relativity
The Special and the General Theory
A popular exposition by
Albert Einstein
Authorized Translation by
Robert W. Lawson

Seems really quite simple.