Earlier quoted context omitted.
That's Goodhart's law, by the way. "When a measure becomes a target, it ceases to be a good measure." Because people game it. https://en.wikipedia.org/wiki/Goodhart%27s_law There's a related memorable, though probably untrue, anecdote about a Soviet nail factory: https://skeptics.stackexchange.com/questions/22375/did-a-sov...
It is not quite the same as Goodhart’s law as it is more a philosophical position in that even if it was not possible to game, we should never do it.
it's odd because recently I felt most "modern" society is based on gaming things until things break.