Oh, you can teach some six year olds algebra. It’s not impossibly hard. Some children are ready at a very young age. But some people you can teach it for a seme

Oh, you can teach some six year olds algebra. It’s not impossibly hard. Some children are ready at a very young age. But some people you can teach it for a semester and every shaky grasp of the subject they got in four months will disappear completely in two weeks. Some people cannot do abstraction.