I don't completely disagree with you, but in Google mathy CS skills are probably better than robust SE skills Things need to operate on enormous scale. It's e

I don't completely disagree with you, but in Google mathy CS skills are probably better than robust SE skills Things need to operate on enormous scale. It's easy to imagine a case where Google would need to implement something algorithmic because well tested libraries aren't quite doing the right thing. The libraries are generally designed to work in RAM / HD. Google needs them to work across multiple servers / datacenters.