In theory this sounds like great advice, but in practice it influences a bunch of people to knit crappy, itchy sweaters that nobody wants.
Good point. Or they end up reading Harry Potter or some other useless book. They won't be tackling any Kant or Dostoevsky.
Few people have the willpower to pursue the higher pleasures in life. What usually happens is they end up working their lives away (50 -80 hours a week) to buy sh-t that won't enrich their minds or souls at all. Moreover, they'll hardly have any time to fiddle with their nice car, relax in their nice home, and enjoy the boat they get to use twice a year. I suppose they could go to some high brow party, but that's probably a waste of time unless you're able to meet people in high places, on your journey to a higher socio economic status.
But, that's it, isn't it? If you're not on a path to a higher social status or economic status, then people will consider your time wasted. If you spend too much time learning in books, you end up wasting your time if you don't use it to reach a higher social and economic status. And if your not rasing your kids to attain high socio economic statuses in the furture, then you're failing as a parent.
However, if you're doing something that doesn't improve one's socio economic status, like playing video games, watching television, movies, and so on, then you're wasting your time.
What's a waste of time really ? I mean, Everything is a waste of time when you're dead. A corpse has no use of any of those things except to maybe rot in them.
Warning: I typed this while I was on ambien. Hopefully it's not too bad.