Purity according xkcd
I’m almost agree. Why almost? Cause I’d make lesser the distance between Mathematics and Physics. Just think in the many physicists who have revolutionized Mathematics and vice-versa, indeed, Theoretical Physics is almost exclusively Mathematics. Oh, also, I’d draw furthest Biology from Psychology and Sociology from Psychology.

Purity according xkcd

I’m almost agree. Why almost? Cause I’d make lesser the distance between Mathematics and Physics. Just think in the many physicists who have revolutionized Mathematics and vice-versa, indeed, Theoretical Physics is almost exclusively Mathematics. Oh, also, I’d draw furthest Biology from Psychology and Sociology from Psychology.