I think this is related, although not exactly the Price equation https://www.lesswrong.com/posts/5XbBm6gkuSdMJy9DT/conditions-for-mathematical-equivalence-of-stochastic
I think this is related, although not exactly the Price equation https://www.lesswrong.com/posts/5XbBm6gkuSdMJy9DT/conditions-for-mathematical-equivalence-of-stochastic