Those “someones” who started using it were Stan Ulam and John von Neumann: https://en.wikipedia.org/wiki/Monte_Carlo_method#History https://en.wikipedia.org/wik

Those “someones” who started using it were Stan Ulam and John von Neumann: https://en.wikipedia.org/wiki/Monte_Carlo_method#History https://en.wikipedia.org/wiki/Monte_Carlo_method#History It’s a beautiful piece of math history.