I wanted to start a thread to hear everyone's opinions over who they thought actually invented the calculus. I read "the calculus wars" a while back and have always been interested in the phenomenon of "simultaneous discovery." And the calculus debate is really a fascinating one. In short, I would put my vote to Leibnitz. Why? Well, again, in short I think Newton had a sense of the calculus but was too preoccupied with his physics and alchemy to really develop it properly. Leibnitz, on the other hand, was focused on the problem of the calculus specifically and operationalized his maths enough to get them published well before Newton. So there goes my vote, what about yours, and please give your reasons and make an argument.