Many commentators tend to regard the multitude of crises that we've faced as a series of independent and random developments. When I look at the bigger picture, it is clear to me that these events are symptoms of problems that have been building over decades.
After an unprecedented period of growth and prosperity, the structural drivers of growth have gone into decline across the developed world. This decline is accelerating.
Debt has been a driver of growth over recent decades. This has slowly built up, underpinned by declining interest rates and with an ever-increasing amount of debt needed to prop up each new growth cycle. When interest rates hit zero, or even became negative in some parts of the world, it is likely that the world reached a point of debt saturation. The volume of new debt that would now be needed to sustain another growth cycle has become too large and this driver of growth is exhausted as a result.
Demographics are increasingly a significant drag. Organization for Economic Cooperation and Development working-age populations have stagnated and are set to contract as the baby boomers retire (see Figure 1). Barring an unforeseen productivity miracle, growth is going to be evermore difficult to generate.