I remember being in school and asking "Why do we need to know this?" I asked it, other kids asked it, and one answer I remember was when I asked my Algebra II teacher, when I was 15, why we needed to know how to figure out square roots. He said it was in case we wanted to figure out how far away stars were. I said, "Don't we have people to do that?"
I didn't care how far away stars were. I thought it should be left to those who really are curious or have a need to know. That need to know the distance of stars has never been good for anything at all yet, as far as I know.
It wasn't long after that (six years) that I myself was a teacher in that same school. Luckily for me and for all the world, I wasn't teaching algebra or astronomy. But still I would be asked "Why do we have to learn this?" Sometimes I gave a serious answer, and sometimes a philosophical answer. Sometimes I made light of it. Sometimes the honest answer was "You don't have to learn this, but I have to try to teach it so I can get paid." Or "Only some of you will need to know it, but they don't know which ones yet, so I have to say it to everybody."
Then one day, the question came phrased a new and better way: "What is this GOOD for?" The answer I gave then changed my life and thinking. I said quickly "So you can get more jokes." I think we were reading a simplified Romeo and Juliet at the time. I could've gone into literature and history and fine arts, but the truth is that the best and most immediate use of most random learning is that it illuminates the world. The more we know, the more jokes we will get.
photo by Sandra Dodd
(click the photo if you don't know what it is)