Elon Musk shows he is smurt

"It's Simple Math. If You Work 100 Hours A Week And Others Work 50, You'll Accomplish Twice As Much As Them" - Musk

Except of course it's more than math. There's a limit to human productivity and fatigue that figure in there. 

There's a point of diminishing returns. Once someone reaches some number (I believe it's around 60 hours), their productivity plummets. 

But by all means, lex luthor, tell us how we need to be more like you to be a billionaire. 

Well, that productivity and a couple of million like you were fortunate enough to start off with.