I’ve probably gone through hundreds of gallons of milk in my life and somehow never once paid attention to this little circle on the side of the jug.

of knowledge.

Not complicated knowledge.

Not something you need a degree to understand.

Just an explanation for something you’ve been looking at your entire life.


The Milk Jug Is Actually Pretty Clever

We tend to think of packaging as disposable.

You buy it.

You open it.

You use what’s inside.

You throw the container away.

But designing packaging that can survive manufacturing, transportation, refrigeration, handling, pouring, and everyday use without constantly leaking or collapsing is actually a pretty interesting engineering problem.

The container needs to be light.

It needs to