Seeing is Believing?

It's easy to trick your brain. That's according to Dan Simons, a University of Illinois psychology professor who has built his career on the idea that most people are unaware of their limits. In his most recent book, "The Invisible Gorilla," he and his co-author explain why our intuitions often fail us. While we think we're seeing the world as it is, we're missing quite a bit....

This hour on Focus, host Jim Meadows talks with Simons about the limits of the human mind and about new National Geographic series called "Brain Games" that features his research.

Want to trick your brain? Try this:

The episode of "Brain Games" entitled "Seeing is Believing" airs tonight at 4:00 p.m. and 8:30 p.m. central time on the National Geographic Channel.