I struggle to find evidence that this is any better anywhere else. At almost every other company I've worked at, the interview process was more about the referral itself (which leads to some pretty awful hires), or whether you can fake it til you make it.

Talent is not a single measure at Google. There are multiple facets to whether Google believes a candidate is solid. Strong technical talent is not an indicator of success, rather just one aspect of it that's taken into consideration by the hiring committees. So yeah, Google will say no to incredibly talented people because they fall short in other areas.

Crapshoot is table stakes practically everywhere you go. At least Google makes an attempt at making things objective and holistic.

There's a lot of myopia in this thread.