It is the truth. Our economy is predicated on cheap oil. Our whole economy. That's why we have this brief time to be fat--a positive word for pretty much the entire history of language . Fertilizers are petroleum derivatives. Plowing cheap fertilizer (using cheap gas to run the tractors) into tons of land in the midwest. Cheap gas moves the food from whence it came to your family grocery store. Where you get to eat it!
I have a bit of anthropological training. Looking at skeletons, you can determine the weight of the human. Hint, up until about the late 1930's we spent our lives hungry. For most of European history, everyone lived through (or didn't make it) a famine year or two, when there was simply no food to be had.
American production of oil peaked in in the 1970's. It looks like Saudi oil is peaking earlier than thought.
We have more humans on the planet than can be supported by significantly lower yields of oil.
Sorry to be, like, a total bummer, but there it is. Hoping for suggestions for the future