We all like to think we have a good grasp of the workings of the world around us, but do we? Through a series of fun, interactive games you'll see firsthand how little knowledge your brain really holds - but don't feel bad, it's not just you! Get ready to say hello to what you don't know, on Brain Games.

Streaming video file encoded with permission for digital streaming by Infobase on April 18, 2015.

Test of Common Sense --(1:23) -- Not Knowing Basics -- (1:25) -- Reasoning Process -- (0:51) -- Incorrect Mental Models of Bicycle -- (4:57) -- Illusion of Knowledge -- (1:22) -- Confidence Range -- (3:40) -- Trick Sign -- (3:42) -- False Memory -- (4:08) -- Card Trick -- (1:02) -- Mental Models -- (4:02).