The problem I see is that the education and intelligence floor for being employable keeps going up, and at some point there are going to be an untenable number

The problem I see is that the education and intelligence floor for being employable keeps going up, and at some point there are going to be an untenable number of people underneath that floor. Some of this is just blatant credentialism and signalling - what insignificant fraction of office jobs really require a college degree? But on the other hand, you're never going to turn somebody like Lenny from Of Mice and Men, who could get by working as a farm-hand in a pre-mechanized agricultural economy, into a software engineer. Maybe we can simplify the process and tools enough that more people are capable of working with very complex things and being productive, but it's hard making abstractions that don't leak.