Nvidia CEO Jensen Huang says the world faces a severe labour shortage – 50 million workers by the end of the decade.

But is this prediction based on solid evidence?

Tim Harford looks at the calculations behind the claim with Rajiv Gupta, a technology expert at Boston Consulting Group, who is the likely source of the 50 million figure.

If you’ve seen a number in the news you think we should look at, email the team: [email protected]

Presenter: Tim Harford