The Chalk Market: Where Mathematicians Go to Get the Good Stuff

Filmmaker Kyung Lee never dreamed she’d become a dealer. But bringing her first feature-length documentary to fruition required money she simply didn’t have. What she did have, however, was an idea for getting high-quality product and access to exclusive clientele.

Hagoromo chalk is a bit thicker than standard American chalk. It has been called the Rolls Royce of chalk—even the Michael Jordan of chalk.

Strength in Numbers: Inside the Berkeley Institute Where Math Geeks Rule

Ever see the TV game show Let’s Make a Deal? Contestants are given a choice of three doors and told that behind one of them is a shiny new sports car. If they pick door No. 1, the host may open door No. 2 to reveal that there’s nothing behind it. Then he asks if they want to stick with door No. 1 or switch to door No. 3. What’s the best move?

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