they don't work because they are approximations to make it easier for you. That isn't math's fault and they are reductions of much more advanced equations that are much more accurate but much more complicated. Like I said, if real life doesn't match the equation, the equation is wrong or incomplete. Math is perfect. It can never be blamed for anything. Any time the numbers are wrong, it is due to user error.
Well, I guess I won't argue any more with you. You probably do have a higher understanding of equations and such. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />
