Suitcases with wheels were not officially invented and patented until 1970, meaning humanity successfully put a man on the moon before we figured out how to roll a heavy box across a flat surface.

A closer look

Suitcases with wheels were not officially invented and patented until 1970, meaning humanity successfully put a man on the moon before we figured out how to roll a heavy box across a flat surface. Bernard Sadow had this groundbreaking epiphany while dragging two heavy suitcases through an airport and spotting a worker effortlessly rolling machinery on a skid. For decades prior, humans just accepted the sheer physical agony of carrying fifty pounds of dead weight by a tiny leather handle. Luggage companies initially rejected the idea because they assumed men would be too proud to roll their bags and women would naturally have a husband to do the heavy lifting. Now we just use them to routinely run over each other's ankles in crowded airport terminals while rushing to gates