By the time kids are three or four, they learn a large part of their native language. It's actually pretty complex - at least on par with algebra - but they lea

By the time kids are three or four, they learn a large part of their native language. It's actually pretty complex - at least on par with algebra - but they learn it, because other people around it do that. Imagine the world richer in math, where young kids are immersed in it from young age...