What I am the most worried about the depletion of oil is that most people assume it will be a bell curve, like US' (conventional) oil production was. Thing is,

What I am the most worried about the depletion of oil is that most people assume it will be a bell curve, like US' (conventional) oil production was. Thing is, it was a bell as people switched to other more profitable sources of oil as US' oil was becoming more expensive. I fear the depletion of world's reserve could look a lot more like a cliff. The absence of alternatives changes a lot the fundamentals of the problem.