I am an ex-physicist and was always annoyed by the color ←→ wavelength mapping in school books. Then in biology class they come up with the retina cones that are supposed to detect only a specific wavelength (or "color").

First belly dancing exercise to break out of the mapping.

Unfortunately the cones are explained as e.g. "red color cone" - and this leads top the second belly dancing exercise and handweaving about other colors (the ones not covered by the cones), using paint mixing as examples.

Colors teaching at school is a complete shitshow. Fortunately this is not something that is important until you are in a relationship and have to paint a wall.

Or that you have this idiot eye doctor I had as a 10 yo kid, who told my father in front of me that I was colorblind and would never do science. Fuck you idiot who said words I remember till this day (as someone who loved science) - I would be so glad to make a copy of my engineering diploma and of my PhD in physics (and all the papers I wrote) and shove it into your ass.

I really resent such people who do not realize how easy it is to crush a kid's dream, similar to the doll vs truck.