to add to what anglagard said ...
Economies are based on the creation of actual things that provide actual utility.
Which are useless if nobody can buy them.
That thinking has led to the last several decades of U.S. decline, the recent recession ...
And yet the problem was not with manufacturing of product but with an absence of people buying the product ... because they did not have the money to buy them.
Making products doesn't put money in buyers pockets, what puts money in buyers pockets is fair return on their investment in the production -- a proper compensation for work rather than starvation wages.
That is why bailing out the rich did not result in recovery.
... That thinking has led to the last several decades of U.S. decline, the recent recession ...
Giving money to the rich via tax cuts and bailouts has only made the economy worse by removing money from the pockets of the spenders to put it in the pockets of the hoarders.
... Oh, and the Greek economic crisis.
The problem of Greece will not be solved by austerity and the imposition of big bank deals either, the problem of Greece can be solved by feeding the base of their economy. You can't make a horse run faster by starving it.
Enjoy