So I was thinking about being older today, and I saw this Louis CK clip about how older people are smarter - "Older people are smarter, and if you get into an argument with someone who's older, you should listen. It doesn't mean they're always right; but even if they're wrong, their wrongness is rooted in more experience."

I was thinking that he is both right and wrong about this. Some people are smarter by virtue of having more experience. Others have lived essentially the same day over and over for 50 years. I think what counts is both the volatility of your experience, and the learning you've taken from those experiences.