Continuity.

My thoughts on it are exactly the same as ten years ago.

A Russian professor...

...is starting his term at an American university. He is assigned to teach an introductory calculus sequence for freshman.

"What topics should I cover?", he asks a few colleagues.

"Oh, simple stuff" they say; "start off with some facts about the real numbers, move into limits and differentiation, talk about continuity, and if you have some time

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