Think a machine can't do your job? Don't say that out loud, or someone will immediately invent one that can. Think that there's other things in life besides a job? Don't say that out loud, either, because the machines will replace that, too. But look ahead: the ones who own the machines can only soak up so much of the profit until there's no one left able to buy anything. This depressing story is brought to you by Alex Culang and Raynato Castro at Buttersafe.