They [political leaders ] thought the only problem was the banking system, and if they fixed the banking system, all would be fine. But the banking system and the mortgage problem were symptomatic of some deeper problems, and evidently they still haven't recognized those deeper problems.

The protesters have called into question whether there is a real democracy. Real democracy is more than the right to vote once every two or four years. The choices have to be meaningful. But increasingly, and especially in the US, it seems that the political system is more akin to "one dollar one vote" than to "one person one vote". Rather than correcting the market failures, the political system was reinforcing them.

The crisis was 2008, in 2015 - almost eight years later and the gap between where we would have been and where we are is huge and not closing. The implied unemployment rate is very high, labour force participation is very low, and the increase in wages in the second quarter was the lowest in 25 years. Before this turmoil, the U.S. economy was in better shape than Europe or Canada, but not strong.

American inequality didn't just happen. It was created.

What Trump has announced - that he is going to not obey rules by which we govern our relations with other countries. He's going to reject the treaties that we have had in the past. He is going to go from what is called a multilateral system, where we all work together, to trying to deal country by country and basically throw out what has been achieved over a 60-year period.

Negative effects on the economy were covered up with a flood of liquidity from the Fed. That,plus lax regulation, led to a housing bubble, a consumption boom - but we were living on borrowed money. It was inevitable that there would be a day of reckoning, and it has now come. We will be paying the costs "with interest".

Economists often like startling theorems, results which seem to run counter to conventional wisdom.