Worm on a Rubberband
 

Any word on the clear answer to the worm point? oh and btw, for the going from the to b in two measures point, because I don't such as the fact that a progression uses fact that 1/infinity is zero, I think that the final action you take is of a size x and requires a time of t, where x*t is significantly less than h (Plank's constant). Therefore at that step you're currently at the finish, in that you can't differentiate between the following smaller step and the finish. I love this description cos it generally does not need unphysical actions of 1/infintity. What do you consider?