and someone does indeed do those things, but imagine if there isn't anyone to do it because everyone is so well educated that it's "beyond" them. Those jobs will "get done" initially at a higher price, but then because there's profit to be made, a smart individual will inevitably invent a machimne to the job, and thus, the total output of society increases (sure there's a turbulent period of transition, but that's acceptable in the grand scheme of things).