I've had a similar experience several times. I feel like in college I was mentally much faster, but lacked insight (and probably curiosity). There have been s

I've had a similar experience several times. I feel like in college I was mentally much faster, but lacked insight (and probably curiosity). There have been several times when I've picked up an old math or CS textbook and read something I never really fully understood in college -- it almost instantly makes intuitive sense to me now -- 20 years later. There's an old saying that college is wasted on the young... in many ways I believe it is true.