"I think money is due for some sort of collapse. People are going to realize that money has a half-life, like radioactive elements"

This quote by Doug Coupland suggests that cash is not a stable or trusted type of currency. He indicates that cash has a limited life expectancy, comparable to radioactive components, which it is due for some sort of collapse. This might imply that people will eventually realize that money is not a trustworthy form of currency and that it will eventually end up being useless. This could lead to a collapse of the economy and a shift in the method people see cash. It might also imply that individuals will become more aware of the value of cash and how it can be used to their advantage. In either case, it is clear that Coupland thinks that money is not a stable form of currency which it is due for some sort of collapse.