Note: This is post #25 in a weekly video series on basic microeconomics.

Suppose there is a mild winter on the West Coast and a harsh winter on the East Coast, says Alex Tabarrok, in this video by Marginal Revolution University. As a result of the weather, people on the East Coast will demand more home heating oil, bidding up the price. Under the price system, entrepreneurs will be incentivized to take oil from where it has lower value on West Coast to where it has higher value on the East Coast. But when price controls are in place, even though the demand is still there from the East Coast, there is no signal of a higher price, eliminating the incentive for entrepreneurs to transport oil from west to east. In fact, this happened in the 1970s, resulting in oil going to lower valued uses on the West Coast while many people on the East Coast didn’t have enough oil to heat their homes.

(If you find the pace of the videos too slow, I’d mend watching them at 1.5 to 2 times the speed. You can adjust the speed at which the video plays by clicking on “Settings” (the gear symbol) and changing “Speed” from normal to 1.25, 1.5 or 2.)

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