Source: Veritasium
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THE TL;DW
- Derek Muller’s earlier Veritasium video claimed his “Blackbird” cart could travel directly downwind faster than the wind, powered by nothing but the wind itself.
- UCLA physics professor Alexander Kusenko emailed Muller insisting the claim broke the laws of physics, escalating into a public $10,000 wager witnessed by Bill Nye, Neil deGrasse Tyson, and Sean Carroll.
- Using a scale model and a detailed physics breakdown of how wheel rotation drives the propeller for thrust, Muller lays out the case that ultimately gets the bet resolved.
The Jupiter Take
This video revisits one of science YouTube’s most talked-about wagers, turning a niche aerodynamics debate into a public showdown between a creator and an academic. It’s a good example of how a controversial claim can escalate from comment-section skepticism into a formal, witnessed bet with real stakes.
Context
The dispute traces back to Muller’s original Blackbird video, which showed a propeller-driven land cart moving directly downwind faster than the wind pushing it — a feat long debated in engineering forums as “DDWFTTW.” Kusenko argued that wind vessels can only exceed wind speed when angled to the wind, not moving straight downwind, setting up the public wager. The vehicle itself was originally built by aerospace engineer Rick Cavallaro, whose design has fueled the controversy since it first demonstrated the effect in 2010.
