"You don't know upfront what's going to happen" Yes, this is exactly why we are shooting shit at asteroids. So we do know what happens, so when that dark time

"You don't know upfront what's going to happen" Yes, this is exactly why we are shooting shit at asteroids. So we do know what happens, so when that dark time comes and we need to shoot something at an asteroid to save a billion lives we know how to do it correctly.