How AI just cracked one of physics' toughest equations—and what it means for the field

The Navier–Stokes equations describe how fluids flow—from water to air to blood—but they're so complex that physicists have been chipping away at them for centuries. AI didn't solve them the way a mathematician would; it found patterns humans might have missed, which is making physicists ask: what are we actually doing when we "solve" something?

This means the line between AI-assisted discovery and traditional physics proof is getting blurry, and that might force us to rethink what understanding really means.