Eventually, enough engineers will breed with enough engineers, that we'll be a different species, incapable of communicating with weirdo humanity.
It's a good concept, but for some reason I thought of a military movie I watched recently, where someone was going on about how they were third generation military. And how their friends and family were military. Sort of the same kind of siloing there.
I don't read info on books ahead of time, and sometimes don't even read the summaries. I've read a LOT of scifi, must be in the thousands of novels by now, but I was completely unsure what was happening for the first 4 chapters at least, and in a very, very good way.