Some teachers have no idea about things and still try to teach them. They aren’t different from other people there.

We were taught a lot of stupid shit in elementary school, because the teacher was a crank and proud of it. I remember vividly how he tried to explain the density anomaly of water (to ten year olds) by saying that atoms in solid objects move faster than in liquids and therefore need more space. I didn’t believe one word of it.