# NullPointerException

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Sanchay Singh](https://cerebralvalley.ai/u/sanchay117)
- **GitHub:** https://github.com/Sanchay117/Gauge
- **Demo video:** https://youtu.be/9W2bqwl6Yyw
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/434

Gauge turns ordinary video into a physical measurement that can fail. You tap the thing that moves. Gauge tracks it, sets a real-world scale, finds the law behind the motion, then tests that law on a recording it has never seen.

AI can describe a video with total confidence and nothing to check it against. Gauge separates seeing from arithmetic: Meta's models see and choose, and code computes. The agent can only report a result by citing a fit that code calculated, and code alone decides pass or fail.

From the 1972 Apollo 16 jump salute film, Gauge read the Moon's gravity at 1.71 m/s². The backpack's size is only known to about five percent, so the honest figure is 1.65 ± 0.15. It then froze that law and tested a second jump, which read 1.61, inside the 8% tolerance. A real throw on Earth read 10.3 and broke the law.

Time leaves a trace too. Slow a clip tenfold and gravity looks 100 times weaker. If two clips share one gravity, Gauge reports the playback speed, and it read 0.10× on a clip slowed tenfold. It flags a bent clock. It does not prove how the clock was bent, and it has not been tested on AI video.

## More from Meta Global AI Developer Hackathon

- [FloodProof](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/431)
- [Zenith IMRA](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/432)
- [TenderCheck](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/433)
- [Mendrika](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/435)
- [FrontierLab](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/436)
- [Kryterea](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/437)

---

Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/434. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt