But that still makes no sense. A woodchuck can chuck wood? Great! Does that mean it can chuck another woodchuck? No. But assuming it could chuck another woodchuck, how would we base it on? Even the original quote "How much wood could a woodchuck chuck if a woodchuck could chuck wood" makes no sense, since you have no way of telling. You'd need the rate of chuckage (the Ca). The ability to chuck does not inherently give any means to find the rate. The quote SHOULD read (to make any sense):
Filling in x and n of course. Even comparing the chucking rate of wood to the ability to chuck woodchucks yields nothing, as if I know the rate at which I could chuck marbles, that doesn't give me a clue as to my car-chucking rate.