 If (in order to avoid the apparent collapse of a ratio or rate into a pure number) the time in the denominator of the ratio expressing the rate of time’s motion is held to be a different temporal dimension from the one in the numerator, then for it to be a genuine time there will have to be passage in it, requiring yet a third temporal dimension. One can see that we are at the beginning of an infinite regress, unless the third temporal dimension is identified with the first (as in Schlesinger 1980, Chapter II), leaving us still in the uncomfortable position of having two temporal dimensions. It seems at best heroic, at worst hopeless, to try to understand passage as a kind of motion.