[Yo-Yo]

Let me guess: You have never written a book yourself. Right?

Nope. Haven't even read that many. But I did buy them in college. You tell me what ground breaking events in the field of calculus occurred that caused me to have to buy a new book half way through the undergrad calc series? The chapters were rearranged, the examples changed, and the homework problems changed, but please correct me if I'm wrong, but the underlying principles of calculus haven't changed much in the past hundred years or so. Yet every 2 years they issue a new edition of the basic Calculus text written by the same authors and published by the same publisher.

Let me guess, you have written a textbook. Have you been approached by the publisher to issue a revised edition yet? You will.

[Logophile]

Let me guess, you have written a textbook. Have you been approached by the publisher to issue a revised edition yet? You will.

Yes, I have written a couple of textbooks. (See Post #45.)

I recently completed the fifth edition of one of my books. (It is in a field that changes fairly rapidly, unlike calculus.) Take my word for it: a new edition requires considerably more effort than writing a new paragraph every year.