no art, however minor, demands less than total dedication if you want to excel in it.”1 - Paul Graham

If the objection being made to a piece of general advice is that it's not for everyone, then it's probably pretty good. No advice is for everyone, so that's just the background radiation of objections.

The difference between a random fact and (for lack of a better word) a non-random one is how many other facts it's connected to. The latter kind are better.

People tend to underestimate how much things can change, and this causes them to undervalue ideas that aren't viable now but could be in the future.