Lottery is a metric that can't be gamed, if implemented correctly. It may not ever be the best system, but it also can't end up being what was a better system that was gamed into a worst system. It provides a certain level of consistent mediocracy between various other systems which rise and fall as they are gamed.
https://www.vox.com/future-perfect/2023/4/19/23689402/colleg...