Polymarket and Kalshi have become two of the fastest-growing online platforms in the prediction market, hosting bets where people can wager on the outcome of events, including on the conflict in Iran. But some observers have raised concerns that unusually precise, well-timed bets could point to insider dealings. So what exactly are prediction markets? And what does it mean for society when you can bet on almost anything?

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Guest: Chris Stokel-Walker, technology journalist and author.

Host: Manveen Rana.

Producer: Sophie McNulty & Julia Webster.

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Read more: Dollars and death threats: the dark side of prediction markets

Further listening: How AI helped Trump attack Iran

Clips: FRENCH 24 English, CNN, 60 Minutes, CBS News, Fox 10 Phoenix, iSpot, The Times, Coinbase.

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