The Great Diaper Calculation began the moment Leo and Maya walked through the nursery door. Standing before a mountain of "Size Newborn" boxes, Leo felt like a general preparing for an expensive, leak-prone siege.

Leo closed his laptop, feeling victorious. "We are ready for anything."

Two weeks later, the baby arrived. They realized within forty-eight hours that no amount of math accounts for a baby who decides to use three diapers in a single twenty-minute window. The spreadsheet was forgotten, but the "backup box" in the closet? That became their North Star.

By dinner, the spreadsheet was a masterpiece of logistics. They settled on a "Buy-As-You-Grow" manifesto: Keep one full box of the next size up in the closet at all times. That way, when the first "blowout" signaled a size change at 3:00 AM, they wouldn't be caught unprepared.

Maya looked at the tiny, pristine white diapers. "But they grow. My sister said her son was out of newborns in two weeks. If we buy 300, we’ll be using them as oversized coasters by mid-month." They spent the afternoon debating the "Diaper Curve."