It's an attack on Piketty without any substance, best I can tell. The problem with any attack on Piketty is that you can test his theory. Ironically, Bill Gates

It's an attack on Piketty without any substance, best I can tell. The problem with any attack on Piketty is that you can test his theory. Ironically, Bill Gates took issue with Piketty's famous r > g formula with at least one predicate he would add. He didn't extrapolate on it (he should if he wants to make a real argument), but at least he put something down. Kay didn't even bother with going that far. He should.