# Timothy B. Lee says the sim-to-real gap explains uneven AI progress across professions

> Original title: This robotics concept helps explain the jaggedness of frontier capabilities

- Source: Understanding AI (Timothy B. Lee)
- Published: 2026-11-05T15:16:59.000Z
- Bad Influence: https://badinfluence.news/items/w0vfgxvl05k938emabjnc6l9o
- Original: https://www.understandingai.org/p/this-robotics-concept-helps-explain

## Summary

Timothy B. Lee argues that AI has advanced fast in programming and mathematics because those tasks can be simulated, while most other professions cannot. He says the same gap that limits robotics manipulation tasks also limits AI replacement of white-collar workers, so he is skeptical of predictions of major disruption in 2027 or 2028. He cites OpenAI's GDPval benchmark, where the best model scored 47.6% when released and now scores more than 85%.