AIReality checkStory 07
Video models make convincing but wrong physics
What changedPhysWeep measures the physical values that actually appear in generated videos, rather than asking whether motion merely looks believable. Two of three open generators repeatedly settled on seed-dependent but incorrect values. The audit covers only three models and six parameter sweeps, but it exposes a clean gap between visual plausibility and physical control.
The useful part
Why it matters
A clip can look physically natural while ignoring the number or condition a user asked for, which weakens claims that today’s video generators understand physics.
Keep in mind
Good to know
The audit covers three open generators and six parameter sweeps, not every video model or physical behavior.
Evidence