The world's most famous detective gets something wrong, and a group of kids get served candy for lunch. Welcome to Critical Reasoning!

An airplane in crisis mid-air, a town with the same name as a Lord of the Rings character, and how to do GMAT conversions the right way. What were you expecting?

A mathematician gives a lecture on Halloween. It leads us to some scary amazing tricks for finding factors. You'll see.

Who knew that talking about the GMAT would lead to a story about a French novelist and a trip in a spaceship?