I think he was spot on. There is a huge difference between his -1, 0, and 1. Likewise, the 1, 2, 3, 4 and 5 are vastly differently even though they all have to work.

(Oddly enough the -1 and 0 don’t work, because they can’t, so the -1 and 0 have something in common with the 6 and above.)