Stocks are the elements of the system that you can see, feel, count, or measure at any given time. A system stock is just what it sounds like: a store, a quantity, an accumulation of material or information that has built up over time. It may be the water in a bathtub, a population, the books in a bookstore, the wood in a tree, the money in a bank,

the world is going from “stocks” to “flows.”

The Balance Sheet Economy is static; it measures what we own , not what we are doing*.* Its metrics are expressed as stocks of assets that exist at a moment in time. For example, on December 31, 2022 there were 142 million existing homes in the U.S.