So I recently needed to reference a piano keyboard, and was too lazy to go to the piano, so did an image search. In the provided images was a tutorial on how to draw a piano, which showed that the black keys were not centered between the white keys. What? I took piano lessons starting in second grade, have had pianos around me most of my life (I can pick out a scale, but don’t have a ready repertoire), but when I draw a piano keyboard, I center the black keys between the white keys. Well, until now. I took a picture of my piano, just to verify the internet info. Yup. The space between the white keys does not hit the center of the black key. Except maybe on the G flat, at least on my piano. Now I’m going to be looking more closely at all the pianos I encounter. What a fascinating bit of trivia and insight on the workings of the human brain.