You don't. There's no way around having to spend some time in the trenches --- but we can at least minimize the amount of time developers spend in the sophomori

You don't. There's no way around having to spend some time in the trenches --- but we can at least minimize the amount of time developers spend in the sophomoric architecture-astronaut intermediate phase by not glorifying excess complexity. Ultimately, though, there's not a good way to teach good taste except to provide good examples.