What was the last time you learned something? How long ago was it since it was something big? More than a day? Did you do anything with this knowledge? Nope?
Me either usually.
At least not enough. I think knowledge washes over most of us. It comes in one ear and out the other. We hear tragic or amazing news and file it mentally in mundane or uninteresting.
Too often do I give up on pursuing something interesting, to continue doing the same. What a shame.