Sure thing. For me, it was the sudden realization that I had made assumptions from the very start of reading it, and that I had ranked certain outcomes far lower than the problem -- taken in isolation -- would justify.

When I read it, I immediately thought, "Okay, rewarding a kid for eating spinach, same ol' same ol' ..."; then when I got to the end, I -- very quickly -- absorbed the insight that, in order for the process not to result in the child hating the mother, certain conditions have to hold, which are probably worthy of probing in depth.

I know all of this may sound obvious, but I really had an aha!/gotcha! moment on that one.