Derek Thompson points out that 2002 predictions by the Bureau of Labor Statistics about job growth by sector for the next ten years turned out to be quite wrong:
What did BLS get right? At least two things: the unstoppable growth in health-care jobs (which it expects to continue) and the steady growth in leisure and hospitality.
What did it miss? Everything else, in particular (a) the boom in mining, led by the natural-gas revolution, (b) the utter collapse of the publishing industry, and (c) the Great Recession, which wiped out half-a-decade of economic growth. BLS thought we’d create 20 million non-farm jobs last decade. We created about six million. That’s a 13-million-job gap.
Essentially, the BLS failed to anticipate the real-world surprises, which is another way of saying it is not psychic. It extrapolated the recent past (health care was expanding, housing was booming, the economy was recovering from a mild recession), baked in global and demographic trends, and voila, put out a plausible projection of the next ten years. This is a perfectly sensible way to predict the future. But then the real world intervened.
This isn’t supposed to be a post about how the BLS forecasting models are bad. It’s supposed to be a post about how predicting the future is impossible, even though predictions play a starring role in discussions about finance and government.
I think Thompson draws the right conclusions here: it isn’t necessarily about jobs but more about the difficulties governments and other organizations have in predicting even ten years into the future. The world is a complex place and this should push us to think about what we can know moving forward. This would be a great point to inject the writings of Nassim Taleb who has argued in several books that this is a huge problem: there are plenty of people, like on Wall Street or in Washington, who think the future is clear enough to risk a lot. Granted, the BLS isn’t going to lose much if their predictions are wrong but it could have a big effect on others. One example: students looking at what majors to select. In recent years, there are more and more articles that talk about the job fields expected to grow in the future. The argument is that students need to make sure they study for employable careers, particularly with rising college costs. But, they may pick a college or a major based on predictions that aren’t necessarily correct. Perhaps this lack of predictive ability is a good argument for liberal arts schools.
Knowing the difficulties of making long-term predictions, what can the average citizen do? Taleb would suggest hedging our bets, perhaps risking some when the negative effects won’t be that bad. (Taleb lays out this investing strategy in Antifragile: put a good amount of money in safe investments and then risk some in places where the payoff could be huge but you aren’t going to lose much if it doesn’t pan out.)