Williams College mathematicians Tom Garrity and Colin Adams are best known outside of their field (and perhaps inside it, too) for their occasional public smackdowns on questions such as, “Which is the better number: π or e?” or “Which is the better operation: the derivative or the integral?” What better day than Pi Day 2018 to have these gentlemen go another round in the fiery pit of mathematical discourse. Mother Jones: You are both learned men of numbers.