SOTD – Purpose of the Circular Dent on Milk Jugs!
Most people have spotted that odd circular dent on the side of a plastic milk jug and wondered what the hell it’s doing there. It looks like a manufacturing mistake, or maybe just some random design choice nobody thought twice about. But that little indentation has a job — a smart, intentional one — and once you understand it, you’ll never look at a jug of milk the same way again. Think of it as the jug’s built-in safety system….