We all know pretty much about recent economic crisises: credit bubbles, hedging funds etc. The enemy is well recognized - so-called financial instruments which create profits from nothing or simply promises of future profits became the crucial tools of making big money.
Now, dont we all really want this? Let's face it, the modern human is more and more, how to say it, cushy. Wants comfort for himself, for the family, wants better designed kitchen, better car, comfortable vacations and in the end - a huge pension when gets old. But he doesnt want to work to get this, because hard work is no longer a value. Modern human (modern white human belonging to the so-called European-American culture) works (still), but even the work must be comfortable. Everything must be comfortable and must come easy, rules must be clear, law should be obeyed, politicians should be nice, there should be no racism, no xenophobia and our children must be happy and receive nice presents for Christmas. Brave New World in its glorious entirety.
Here come the deliverers of these goods. Banks. Economists. Politicians. Real-estate developers. Where's the demand there must be a supply. They invent the clever way of increasing our happiness. Let's persuade people that not only what they really DO and what they FIGHT FOR brings them money, it's also what they DREAM OF brings money.
Well, this mechanism is very well-known. There's a spirit of marxism floating over this, but Marx wasnt a human rights abuser, he was a scholar.

To the point. First lesson is - you can earn money doing physical job. True? True. W=F*s. Second one - you can earn money doing a white-collar job. True? True. Third one - physical job can be easily rewarded, white-collar not, because many whitecollars workers operate in a grey sector, Id call it semi-religious. You know nothing and you do nothing, you can just give your money to the magician and he doubles it in a month. Or he can double the value of your house. Well, the problem is that for people on Earth, taking things globally, this sudden increase of value changes nothing - no work which would increase the value of your house has been done, not a single nail has been hit by a hammer.
Isnt it our dream? Being wealthy and doing nothing?