I went to two very good schools but occasionally find that something I was taught (and clearly remember learning) was complete nonsense. Some things that spring to mind:
- that boiling eggs leaves a poisonous deposit in the pan, so you should have a special egg pan to avoid being poisoned.
- that gravity is caused by something a bit like centrifugal force.
- that the sea is only blue because it reflects the sky (in fact, I was thrown out of class for asking why the sea was blue, on the grounds that it was a stupid question that I could only have asked in order to waste time).
What bollocks were you taught at school?