Earlier quoted context omitted.
A hundred years is an eternity in terms of current technological advancement. We only learned the universe is accelerating its expansion in 1997. Think about that next time you think a 100 year supply is tiny.
They say Americans should learn that 100 years is not a long time just as Europeans should learn that 100 miles it not a long distance. What if we were in year 95 of the 100 year supply? How would you feel then?
There is a small amount of oil that can be pumped at less than $10 per barrel. There is a moderate amount of oil that can be pumped at $20 per barrel, and that will disappear in the foreseeable future. At $50 per barrel, there is a lot of fossil fuel material. At $100 per barrel, there is vastly more. At $200 per barrel, we do not know because no one will care until the 23rd century, but the problem will probably be the environmental damage, not the availability.