you're wasting your thoughts on that asshat...he's waiting for his mommy to call him when his kraft mac-n-cheese is ready.
See, there's more than one way of looking at imparting knowledge. There's the old saw about not being able to fill a cup that's already full and then there's my personal philosophy, which is that when the student is ready the teacher appears.
I used to take that literally, I don't anymore. I think it can also mean that you may be told something very valuable but at the time you're given this information you're not ready for it, you don't get it. Then one day, when you are ready, you'll remember that useful piece of shit, totally out of the blue and it'll be like, oh, yeah, now I get it.
Case in point, raising kids. Ideally we tell our kids tons of useful things from day one, from the mundane like "brush twice a day", to the profound like "Communication and respect are the foundations for a lasting relationship" or "Save 10%. Debt is not pretty."
Kids blow off 90% of this shit as they get older, particularly through the teenaged years, or they yes their parents to death to keep the peace and think "you are so full of shit" but you still have planted seeds, seeds of thought you might say, and like any seed they can lay dormant for a long time, years even, but once given the right conditions you have germination.