Risk

The possibility that events might not turn out as expected. Risk faces all economic participants; workers might not get paid, or might lose their jobs; customers may overpay or purchase a shoddy product; producers may find that demand is much lower than they hoped; investors may lose money; and so on. Some risks can be quantified: actuaries have a pretty good idea how many people will die in a normal year. But much risk is subject to Knightian uncertainty; there is not enough information to assess all the probabilities.