Business video description from TED: Behavioral economist Dan Ariely, the author of Predictably Irrational, uses classic visual illusions and his own counterintuitive (and sometimes shocking) research findings to show how we’re not as rational as we think when we make decisions.

It’s become increasingly obvious that the dismal science of economics is not as firmly grounded in actual behavior as was once supposed. In “Predictably Irrational,” Dan Ariely tells us why.