# raven paradox

> philosophical paradox: why is it that observing a black raven is evidence for “all ravens are black”, but observing a nonblack nonraven is not?

**Wikidata**: [Q919255](https://www.wikidata.org/wiki/Q919255)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Raven_paradox)  
**Source**: https://4ort.xyz/entity/raven-paradox


## References

1. Freebase Data Dumps. 2013