That reminds me of a fallacy that was described somewhere (is it in freakonomics?). A daycare place wanted parents to not be late for pickup so they instituted

That reminds me of a fallacy that was described somewhere (is it in freakonomics?). A daycare place wanted parents to not be late for pickup so they instituted a small fine ($5-10) if you pick up late. The result was: more late pickups, because it now had a price, the perception changed to make it less shameful and more like the price of a service.