It is possible to fit them in by the economist's magic trick of defining any behavior as maximizing something called utility, utility being defined as whatever you choose to maximize.
It is possible to achieve this feat.
It is completely impossible.
The two basketball teams compete for a win.
A person  in a black shirt laughs at a joke.
The staircase is 5 meters above sea level.
Distributed environment consisting of administration.
People are jostling in line to check out their groceries
An economy may just have to rely on its own saving.