The one sure mark of a con, though, is the promise of free money.

The worst loophole is what Donald Trump has talked about: the tax deductibility of interest. If you let real estate owners or corporate raiders borrow the money to buy a property or company, and then pay interest to the bondholders, you'll load the company you take over with debt. But you don't have to pay taxes on the profits that you pay out in this way. You can deduct the interest from your tax liability.

So the Bush-Obama administration has taken a fiscal stance diametrically opposed to that of the patron saint of free enterprise. While escalating war in Afghanistan and maintaining over 850 military bases around the world, the administration has run up the national debt that Smith decried. By shifting the tax burden off property and off rent-seeking monopolies - above all, off the financial sector - this policy has raised America's cost of living and doing business, thereby undercutting its competitive power and running up larger and larger foreign debt.

The concept of productivity in America is income divided by labor. So if you're Goldman Sachs and you pay yourself $20 million a year in salary and bonuses, you're considered to have added $20 million to GDP, and that's enormously productive. So we're talking in a tautology. We're talking with circular reasoning here.

People are putting their money into treasuries because they worry that the risk of putting their money into the bond market, the stock market or even the money markets is very high.

If you look at payments to labor as a proportion of national income or gross domestic product, you find profits going way up, investment and savings going up.

People tend to think that paying a debt is like going out and buying a car, buying more food or buying more clothes. But it really isn't. When you pay a debt to the bank, the banks use this money to lend out to somebody else or to yourself. The interest charges to carry this debt go up and up as debt grows.