Alfred Marshall

January 23, 2019

When to Worry About Water

Approaching Day Zero, the people in Cape Town South Africa were conserving water by singing two minute shower songs and using 50 liters (13 gallons) a day.

June 25, 2018

Breaking the First-Digit Law and Other Number Crimes

When the digits that appear frequently in national accounting figures, spreadsheets, and earnings reports are missing, then we can say we have suspicious numbers.

October 22, 2017

The Economics of the Pumpkin Slingshot

For the next bite of a doughnut or the next try at a pumpkin slingshot, economist Alfred Marshall's marginal analysis helps you decide whether to say yes.