# Brain Teaser: Blue Forehead Room

What happens when 100 perfect logicians have to figure out if they each have a blue forehead?

- Kind: Talk
- Genres: Education
- Archive: [Internet Archive](https://archive.org/details/KA-converted-rBaCDC52NOY)
- Licence or status: none stated by the archive
- Who can watch: Kids profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/KA-converted-rBaCDC52NOY?play=1)