Most People Will Go Their Entire Lives Without Ever Knowing What the Circular Dent on the Side of the Milk Jug Is For

Most People Will Go Their Entire Lives Without Ever Knowing What the Circular Dent on the Side of the Milk Jug Is For

At first glance, a plastic milk jug seems like one of the simplest everyday objects we use. We grab it from the refrigerator, pour a glass, and put it back without a second thought. Yet hidden in plain sight is a small design feature that almost everyone notices—but few understand: the circular dent on the side of the milk jug.