Gonna go out on a limb here and say that getting into AI was the best thing Zuckerberg ever did for humanity, specifically the decision to release Llama as open weight (albeit obnoxious license) early on. That was the thing that showed the whole world open weights could work. Even if modern open weight models aren’t direct descendents of Llama, and even if Meta subsequently pivoted to closed weights, that’s still something that shouldn’t be forgotten.