Comment by jxjnskkzxxhx

TIL there actually is something called "no free lunch in search and optimization"[1].

See however that the theorem is quite weak. Requires eg the assumption that the search space has no structure. They even have the example of quadratic problems. It's mostly a useless saying, it appears to me.

[1] https://en.m.wikipedia.org/wiki/No_free_lunch_in_search_and_...