Peak oil as a thermostat
Here’s a metaphor that may help in explaining why high oil prices are choking off economic growth for the U.S., and to a lesser extent the rest of the world as well. Think of the oil price as the mercury in a thermostat. As the economy heats up, the mercury expands (oil prices go up). This shuts off the furnace (the factors of production and consumption in the economy that make it grow). As the economy cools, demand for oil contracts and oil prices decline. But with oil now cheap, the factors of production kick in again; this causes oil prices to be bid up, and high prices once again choke off growth.


