Let me just preface that inverting a binary tree.. Maybe they wanted a particular answer and it was an off day.
That said, the author of Homebrew would be the top authority in the field of OSX package management yeah? I mean, Apple hasn't even bothered to create a competitor and yet every tech bro at Google using a MBP is going to need to install and use it..
I also doubt that Kenny was having to do daily scrums and explain why the web ad wootigulizer algorithm hadn't had any progress since Monday. Long since in executive management, is my guess.
I guarantee when Google hires someone like Ken Thompson, they do not get the normal Google hiring experience.