I miss the days where people actually cared if you knew about threading, how the unix file system worked, the finer points of the language you choose to work in. Yeah I get it, most of it is book knowledge, but it still somehow selected for the people that actually built the foundations of the tech companies we see today. The current crop of hires aren't really contributing anything fundamental, just jumping from one high paying gig to the next (and I say this as someone who works at one of those fancy places he get an offer from).