There really aren't any hard problems anymore. Nothing really requires you to chew on it, deeply look into it, or attempt to truly understand it. Got a question? Go to wikipedia, or reddit, or whatever and get 1/4 of the actual knowledge. Enough to satisfy you. Have a problem? There's an app for that. Can't get something done? Probably some cheaply made tool to handle it.
Suppose you want to actually dig deep into something. Good luck, the body of knowledge is so large a PhD is really just table stakes. This leaves the true "innovators" to an ever-dwindling pool of people who can simultaneously afford and succeed in such a program. If you add entrepreneurship to "innovators" we see the same thing. Most "hard" problems people will pay money for are solved and the pool of these problems gets smaller every day. So what do you do? Start a business that caters to decadence.
Without any hard problems requiring solutions, and most "human" problems being solved, and most higher-level thinking permanently roadblocked by 1000 years of science, then we necessarily go to decadence. It's the same cycle most societies go through right until they collapse.
