Introductory Calculus, my friend, a teacher, during a period, where a new edition proved to be more buggy then the rest, abandoned text books. A recent HS grad, walked into their class, and was dismissed... then dropped my name, and was told to sit down. There are things from recent work that is now being incorporated into the curriculum, cleaner approaches... but the text books have not kept pace, except for one important exception: The amount of free textbooks has ballooned, and a great new proof of integral (1/x)
