Your brain constantly makes judgment calls often considered common sense - but how common is it? Illusionist Eric Leclerc reveals faults in your beliefs and perceptions. Then we'll put gravity - and your assumptions - to the test by dropping a watermelon and an egg from four stories up! We'll employ the "Wisdom of the Crowd" to guess the number of gumballs contained in a giant jar. Comedian Ben Bailey will quiz people on the street to see just how good their common sense actually is. Finally, kinetic artist Joseph Herscher will challenge two very different teams to build a better mousetrap.

Streaming video file encoded with permission for digital streaming by Infobase on September 04, 2015.

Common Sense: Introduction --(2:29) -- Gravity Experiment -- (2:14) -- Wisdom of the Crowd -- (3:25) -- Common Sense Quiz -- (7:00) -- Logic Puzzle -- (1:37) -- Rube Goldberg Alarm Clock -- (1:53) -- Rube Goldberg Machine Challenge -- (3:32) -- Rube Goldberg Mousetrap -- (1:48) -- Credits: Common Sense: Brain Games -- (Season 5) (0:42).