Einstein was 12 when he started learning calculus; the myth that he was bad at math as a child is just that (a myth). Einstein didn't "get started in his spare

Einstein was 12 when he started learning calculus; the myth that he was bad at math as a child is just that (a myth). Einstein didn't "get started in his spare time" - thoughts about the universe consumed him as a person, to the point where him being "absent minded" was because he was visualizing the universe; his love letters even contained frequent discussions of science. His brain was preserved after his death, and there's been actual work done by multiple groups, with indications he was structurally different than a normal brain. Einstein did NOT just get started "in his spare time". At all.