Economists Wanted to Be Newton. They Got Astrology With Regression Tables. A Fortune piece on Tyler Goodspeed's new book is making the rounds. He studied 400 years of recessions. Tested every cycle theory ever proposed. Three-year cycles. Seven-year cycles. Kondratiev waves. 60-year super cycles. None of them held up. His finding: recessions are random shocks. Mostly energy and war. Goodspeed argues 2008 wasn't primarily a finance story. The subprime and ARM mess was the dry tinder. The June 2008 oil spike was the match. Households absorbing an extra $2,000 in energy costs on top of mortgage resets is what broke the consumer. The 2001 "dot-com recession"? All the output decline happened the quarter 9/11 hit. Even Blackbeard caused a colonial depression by blockading Charleston. Charlie Munger had a name for what's happening here. Physics envy. Economists wanted to be Newton. They got astrology with regression tables. Goodspeed describes their fanciest dynamic factor models as curve fitting after the fact rather than real prediction tools. That's the whole field's epitaph. The lesson is not "you can't see anything coming." That's the lazy reading. The lesson is: stop pretending you have a crystal ball, and start using common sense. Cycles are not predictable. Trends are. Don't confuse the two. Aging demographics are a 30-year wave you can see with a chart. Recessions are random shocks you can't time. The first is arithmetic. The second is astrology. If you see a submarket about to absorb new supply equal to 10% of existing inventory in one year, you don't need a model. MIT and Upjohn research shows that level of new supply softens rents 5-7%. Supply tells you the direction. Demand tells you the magnitude. Austin hit a heavy supply wave in 2024 and rents dropped sharply because tech layoffs hit the demand side at the same time. If you see a multifamily market where supply tripled and population growth stalled, you can predict concessions before they show up in CoStar. The trap is mistaking that kind of arithmetic for forecasting. Goodspeed's research shows the cycle theorists were doing astrology. But most operators who survived 2008 weren't the ones who called the crash precisely. They were the ones who built businesses that could absorb shocks they couldn't time. Reading the clues tells you what to avoid. Building a business that doesn't need to time them is what keeps you alive. You don't need to predict the recession. You need to stop standing in the places that get hit hardest when one shows up. The 80% LTV deal with floating rate debt. The submarket with three competing lease-ups across the street. The pro forma that needs 4% rent growth every year for ten years. The bridge loan maturing in a market where cap rates moved 150 basis points against you. The discipline to walk away from a deal that requires everything to go right is missing. Article: https://lnkd.in/eewaKkQz