We’ve all been in the express checkout line, grumbling about the person in front of us who has more than the maximum number of items in his or her cart. We may have even said something to this person, or complained to the cashier. But I’m guessing that most of us have not been charged with assault for attacking that other customer with a shopping cart. [More]
Here’s a different sort of grocery store math than you’re probably used to. A high school math teacher in Santa Cruz, California drew up a lesson plan for teaching students to answer the question: “which checkout line is the fastest?” Clearly, this is education after our own hearts. You may have your own anecdata on this subject, and even try to make predictions as you choose your line and thus your destiny, but that is no match for science.