What do you think of this explanation?
I think that is a splendid way of looking at it; so much so I wish I'd
thought of it myself!
I also liked the quote from "Calculus made Easy". I must try to get a
copy - I've forgotten most of what I knew about calculus! Used to be a real
calculus whizz kid, but no longer. Sounds like my sort of book...
Craig
