I never believed the really depressing theories thrown out there, but it is still possible for the economy to go into a downturn. I think we may get at least a couple more quarters of growth, as we rebound from the recession, but it may not be sustainable if unemployment doesn't fall appreciably. In addition there are a lot of risks out there in the world like Greece and most of southern Europe, China overheating, defaults of commercial real estate etc. Any of these events could trigger the next downturn.
There is always something going on in the world that could destroy the economy even when things are good, and anyone with a deep sense of economic history would probably wonder how the whole crazy fabric still manages to hang together.
That's true but the economy is a simple product of human nature. It's the exchange of currency for goods and the exchange of work for currency. The economy in general isn't going anywhere.
