# Twin Earth thought experiment

> thought experiment by philosopher Hilary Putnam

**Wikidata**: [Q244774](https://www.wikidata.org/wiki/Q244774)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Twin_Earth_thought_experiment)  
**Source**: https://4ort.xyz/entity/twin-earth-thought-experiment


## References

1. Freebase Data Dumps. 2013