Skip to navigationSkip to main contentSkip to right columnADVERTISEMENTTobi Opeyemi AmureSat, September 12, 2026 at 7:47 PM GMT+2 6 min readBig claims about machines and work always arrive with a number attached, because the number is what does the persuading.Nobody remembers the argument. Everybody remembers the figure.That is why automation forecasts land differently than interest rate forecasts. A rate call you can check in six weeks. A claim about the shape of the world economy in 2036 sits out there for years, doing quiet work on how you invest, what you tell your kids to study in college, and whether you assume your job survives the decade.The baseline right now is deliberately boring. Global growth is running near 3% a year, and outside of shocks it has for most of the past decade. Your 401(k) projections, your employer's hiring budget and your local housing market all rest on some version of that assumption.Boring baselines are useful. They are also the first thing to get blown up when someone with capital and an audience publishes a different number.That happened again on Sept. 9. "AI+robots will more than double the global economy in less than 10 years," Elon Musk posted on X, the platform he owns.I have read enough forecasts to know the claim itself is never the interesting part. The growth rate the claim quietly requires is. So I ran the timeline against the International Monetary Fund's own projections, and the gap is wider than one sentence on social media lets on.Elon Musk says AI and robots will double global GDP by 2036.Malorny / Getty ImagesGlobal gross domestic product is projected at roughly $126 trillion in 2026, according to the International Monetary Fund. Doubling that means adding a second $126 trillion of annual output by the mid-2030s.Run the compounding and the requirement gets specific. A clean double in ten years takes 7.2% growth every year. Doing it in less than ten pushes you to about 8% a year over nine years, or 9% over eight.More Robots:BMW doubles down on humanoid robots after a U.S. test run