People have put a lot of faith in the government's ability to get growth going in China. People have this, what I think, illusion that there are six people in China who really have their hand on every button. And what we're learning is, it's a very big economy and they're not that good at it.

I think it was seen as a symptom that the Chinese leadership may be really scared about their economy.Why would you want to depend more on exports if you're a country that has a stated policy of relying less on exports and more on consumer spending, domestic spending?

I think oil prices are down for two reasons. One is, there is a lot of supply. There is a lot of supply because the U.S. now produces a lot of oil and there is a lot of supply because the Saudis seem to want to produce a lot of oil, maybe to punish the Iranians and the Russians.

China's stock market is not very big. And yet when stock market has a bad day in China, it seems, Europe has a bad day and then we have a bad day.

I think that the feel that maybe China is slowing down means it will be buying less from Africa and Latin America. That means Procter & Gamble and Coca-Cola will sell less in Latin America and Africa. And so it is definitely related.

There is also a concern that there is a lack of demand of oil. And so when commodity prices fall, it's good if you happen to be a consumer, but it's sometimes seen as symptom of a weakening economy.

I think it's hard to understand in economics. It's easier to understand on psychology.It's a kind of panic or a sense that the world economy is just not in as good shape as we thought and so everybody is chasing everybody else.