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Speaker 1: Audible dot com is the leading provider of digital audio

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Speaker 1: books and spoken word, with over one tho titles to

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Speaker 1: choose from. Audible lets you listen to your favorite books anywhere, anytime.

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Speaker 1: Go to audible podcast dot com slash stuff brain to

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Speaker 1: get a free audio book download of your choice when

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Speaker 1: you sign up today. Welcome to brain Stuff from how

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Speaker 1: stuff works dot com where smart Happens. I am Marshall

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Speaker 1: Brain with today's question. Why is there a small hole

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Speaker 1: on the top of many spray can lids? For example,

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Speaker 1: if you have a can of PAM in the kitchen,

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Speaker 1: the cap will have a hole in it. These little

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Speaker 1: holes are a good example of a feature built into

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Speaker 1: a product so that it can handle some kind of

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Speaker 1: unusual or unexpected situation. We don't think about or see

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Speaker 1: these situations in normal use of the product, but the

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Speaker 1: feature is there to handle them when they pop up.

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Speaker 1: With a can of PAM, the lid fits very tightly.

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Speaker 1: If the manufacturer puts the caps on the cans in

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Speaker 1: New Jersey and then ships the cans to Denver, which

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Speaker 1: is called the mile High City for a reason, a

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Speaker 1: funny thing happens. The air pressure inside the lid pops

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Speaker 1: the lid right off, so the poor stock boy at

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Speaker 1: the grocery store has to put the lids back on

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Speaker 1: thirty cans before you can put them on the shelf.

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Speaker 1: It's a total pain. By putting a small hole on

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Speaker 1: the lid, the eric and exit through the hole and

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Speaker 1: the lids stay on during shipping. For more on this

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Speaker 1: and thousands of other topics because it how staff works

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Speaker 1: dot com. Audible dot com is the leading provider of

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Speaker 1: digital audio books and spoken word, with over one titles

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00:01:44,760 --> 00:01:47,280
Speaker 1: to choose from. Audible lets you listen to your favorite

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Speaker 1: books anywhere, anytime. Go to audible podcast dot com slash

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Speaker 1: stuff Brain to get a free audio book download of

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Speaker 1: your choice when you sign up today.