Jojon wrote:However; if you begin to edit the curves manually, using the IPO curve editor (which, by the sound of it, you have yet to do), you are perfectly able to create point duplicates and even have them on the exact same spot, which would cause a division by zero
Aaahh, I see.
BTW: I already did used IPO Curve Editor quite a lot actually -
it is even possible (but you don't want to do that) to place points on fractions of frame numbers, not just integers, so it is perfectly possible to place a point on frame 1.5, or frame 12.3456.
Since I did lot of editing, and I probably have some point on fractions of frames I'm afraid to ask: But WHY I don't want do do that? Have I understood correctly that my animation might be a little different from what I see in Blender?