The Hidden Purpose Behind That Little Dent on Your Milk Jug — And Why It Matters More Than You Think
Most people never stop to think about the small round dent on the side of a plastic milk jug. It’s so common that it fades into the background—just another part of the container, often mistaken for a flaw or a random quirk of manufacturing. Some might even assume it’s a “dent” that happened accidentally during…