The problems of 2008 were never cured. The Federal Reserve's solution to the crisis was to lend the economy enough money to borrow its way out of debt. It thought that if it could subsidize banks lending homeowners enough money to buy houses from people who are defaulting, then the bank balance sheets would end up okay.

What's the best gamble in the world, right now? Its betting that Deutsche Bank stock is going to go down. Short sellers borrowed money from their banks to place bets that Deutsche Bank stock is going to go down. Now, it's wringing its hands and saying, "Oh the speculators are killing us." But it's Deutsche Bank and the other banks that are providing the money to the speculators to bet on credit.

I think the less fracking there is, the better it is for the economy and society.

Just like a house is worth whatever a bank's going to lend against it, an education is worth whatever the bank is going to lend the student to pay the university. So the availability of government-guaranteed student loans has vastly inflated the cost of education, just like it's inflated the cost of housing.

Deflation means a slowdown of income growth. Markets shrink, new capital investment and employment also taper off, so wages decline. That is what's happening as deliberate policy in Europe and the United States. Falling or stagnant prices are simply the result of having less income to spend.

Economists often define their discipline as "the allocation of scarce resources among competing ends." But when resources or money really become scarce, economists call it a crisis and say that it's a question for politicians, not their own department.

Trump has said that he wants to remove the tax deductibility of interest. If he can do that, fine. But I hope that Trump knows that it's not the President that sets tax policy. It's Congress.