Business

Investment lessons from the last 1000 years

The average rate of growth in expansion periods after the Industrial Revolution was lower than the average rate preceding it.
Claire McCombe

NEW studies of the performance of the world economy over the last millennium further burnish the role of institutions, both formal (parliaments, judiciaries, central banks, social safety nets and schools) and less formal (guilds, trade unions and charities), in its success. It has long been accepted that economic growth and rising living standards are a relatively new phenomenon. Prior to the 18th century, the world economy flatlined; from generation to generation, living standards barely budged. Then from around 1750, output per head suddenly took off and has kept on rising ever since, growing at around 1.5 per cent per year. The miracle of compound interest means that the time that it has taken over this period for living standards to double has been around 50 years vs. around a millennium for the same trick to be pulled off prior to 1700 . This growth take off has coincided with other happy trends: infant mortality rates have almost halved since the end of the 18th century; the estimated human lifespan has doubled.

A new study of the entire millennium suggests that while growth up until the mid 18th century did flatline on average, there were significant swings within it. The reason that average growth was far lower during this period was not so much an absence of growth, but because expanding periods were almost exactly offset by contracting periods. In fact, the average rate of growth in expansion periods after the Industrial Revolution was lower than the average rate preceding it. Essentially, the revolution in living standards after 1750 may not be solely down to a surge in ideas and technologies, but from societies finding increasing means of avoiding recessions. While recessions occurred c.50 per cent of the time prior to 1700, they have occurred 30 per cent of the time since 1700 and only 17 per cent of the time since 1900.

To better understand the foundations of long-term growth, we need to explain why economies have become less prone to recessions. The most plausible explanation seems to be twofold: the emergence of institutions that cushioned the damaging effects of recessions (welfare systems, central banks), and those that improved political stability. The latter is an especially important condition for long-term growth, as it allowed inventors and entrepreneurs alike the freedom to focus on innovation.

In terms of a practical application, it again argues for putting as much of your hard-earned money to work for the long term in capital markets, particularly stocks, as your risk appetite and financial plans will allow. The pronounced de-rating of stocks so far this year would suggest an inexpensive long term entry point.

Whilst our hunch is that the current populist spasms will pass, being in large part a function of world views that younger parts of western electorates do not share – if this were not to be the case, and the institutions and norms that enabled our prosperity were eroded, then this lesson from the long sweep of history will be a salutary one – recessions could again become more frequent and severe, growth not so much the norm. US citizens (and the world's investors) could quickly find that Turkey is not just a Thanksgiving feast, but a vision of the future.

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