[jmalicki]

There are likely a lot of downsides to their PSC system, but Meta is way more rigorous than this. They take performance reviews written by the employee themselves, reports, peers, managers, and calibrate them in meetings involving peer managers and several levels of managers above.

It's probably one of the more rigorous systems in the tech industry that at least avoids this kind of bias, though there are certainly ways it can be gamed.