[This is part of the series: The Complete Guide To Economics 101.]
What is Say’s Law?
Say’s Law is a simple assertion that says that supply creates demand.
I should clarify by saying it as: In the long-run, aggregate demand will equal aggregate supply.
Quite simply, if one wants to sell $100 worth of t-shirts, eventually, they will demand $100 worth of something else.
The law is called “Say’s” because it was said by the French economist, Jean-Baptiste Say.