Oil isn't easily replaced, though. It's not just energy, there are all the products derived from it. If you shut it off suddenly, things would collapse. Does

Oil isn't easily replaced, though. It's not just energy, there are all the products derived from it. If you shut it off suddenly, things would collapse. Doesn't mean we shouldn't try to replace it, but if we had easy replacement we wouldn't have these problems in the first place.