Maybe I am overly optimistic about human intelligence, but I don't really see a "low water mark", at least in a practical sense -- certainly not anytime soon.

Maybe I am overly optimistic about human intelligence, but I don't really see a "low water mark", at least in a practical sense -- certainly not anytime soon. There will always be a "least skilled job" in the employment hierarchy. By the time our society reaches a level at which its lowest form of employment exceeds the capabilities of our current checkout clerks and fast food workers, staying alive will likely require very little in the way of monetary resources.