Everyday things with hidden features we weren’t aware of

[post_page_title]Plastic milk containers[/post_page_title]

If you get your milk in plastic containers, you’ve surely noticed those big, round indentations on the side. Is this a way for dairy farmers to cheat you out of a full quart or gallon?

Plastic milk containers

In truth, these dents serve two very important purposes. First, they help absorb the shock if you ever drop the container on the floor. Second, they provide extra room for the container to expand, which is how you can tell if the milk’s gone bad without having to taste it.

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