[silvio]

"A stupid person is a person who caused losses to another person or to a group of persons while himself deriving no gain and even possibly incurring losses."

http://www.ecotopia.com/webpress/stupidity/

[Radim]

but who decides what is a "loss" and what is a "gain"?

as an individual, you may be able to tell the balance on your death bed, finally and irrevocably.

as a society, the show always goes on.