Those constraints are incomparably looser than those encountered in a "stable" engineering discipline e.g. you can't build a driveshaft out of wood but you coul

Those constraints are incomparably looser than those encountered in a "stable" engineering discipline e.g. you can't build a driveshaft out of wood but you could write paxos in brainfuck. The use of physical material with hard constraints means there are "few good solutions" hence the disciplines converge and stabilise. Our thought-stuff just doesn't have that property. Even a hard real-time constraint does not strongly dictate many of our design and implementation choices of the written code, only the final behaviour.