## independence

Take a quick trip to the foundations of probability theory.

**John D. Barrow**challenges readers to estimate the errors that aren't found from the errors that are.

**John D. Barrow**challenges readers to estimate the errors that aren't found from the errors that are.

**Jochen Blath**and

**Peter MÃ¶rters**discuss one particularly interesting aspect of the game - the doubling cube. They show how a model using Brownian motion can help a player to decide when to double or accept a double.