Many people have the impression that recessions come from financial missteps, such as the US subprime loan fiasco. If energy is involved at all, the problem comes from high oil prices as supply becomes inadequate to meet demand.
The real situation is different. We already seem to be on the road toward a new crisis; this crisis is likely to be much worse than the Great Recession of 2008-2009. This time, a major problem is likely to be energy prices that are too low for producers. Last time, a major problem was oil prices that were too high for consumers. The problem is different, but it is in some ways symmetric.
Last time, the United States seemed to be the epicenter; this time, my analysis indicates China is likely to be the epicenter. Last time, the world economy was coming off a high growth period; this time, the world economy is already somewhat depressed, even before hitting headwinds. These differences, plus the strange physics-based way that the world economy is organized, explain why the outcome seems likely to be worse this time than in 2008-2009.
I recently explained what I see as happening in a presentation for actuaries: Recession Likely: Expect a Bend in Trend Lines. This post is based on this presentation, omitting the strictly insurance-related portions.