# What’s something you use every day that you don’t really understand anymore?

**URL:** <https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652>\
**Category:** Off Topic Lounge\
**Created:** [February 10, 2026, 2:45pm UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652 "2026-02-10T14:45:50Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![zilk](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zilk/32/45823_2.png) [@zilk](https://forum.zcashcommunity.com/u/zilk)\
**Post date:** [February 10, 2026, 2:45pm UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/1 "2026-02-10T14:45:50Z")

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I could say that mine is modern search.

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**Author:** ![earthrise](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/earthrise/32/11887_2.png) [@earthrise](https://forum.zcashcommunity.com/u/earthrise)\
**Post date:** [February 11, 2026, 3:07am UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/2 "2026-02-11T03:07:04Z")

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Nearly everything, I think the only things on my desk I could actually explain to someone are the speakers. (How tf do pens work without the ink falling out even tho I store them upside down?) Even most of the rust apps I write myself have a huge dependency tree that I don’t understand.

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**Author:** ![hanh](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/hanh/32/27853_2.png) [@hanh](https://forum.zcashcommunity.com/u/hanh)\
**Post date:** [February 11, 2026, 4:32am UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/3 "2026-02-11T04:32:48Z")

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> [@earthrise](#):
>
> How tf do pens work without the ink falling out even tho I store them upside down?

Viscosity and surface tension?

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**Author:** ![jenkin](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/jenkin/32/48434_2.png) [@jenkin](https://forum.zcashcommunity.com/u/jenkin)\
**Post date:** [February 11, 2026, 12:21pm UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/4 "2026-02-11T12:21:16Z")

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My brain I suppose…

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**Author:** ![zilk](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zilk/32/45823_2.png) [@zilk](https://forum.zcashcommunity.com/u/zilk)\
**Post date:** [February 11, 2026, 3:40pm UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/5 "2026-02-11T15:40:12Z")

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yeah me too, sometimes or maybe always haha

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**Author:** ![Zebraman](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zebraman/32/43159_2.png) [@Zebraman](https://forum.zcashcommunity.com/u/Zebraman)\
**Post date:** [February 12, 2026, 1:56pm UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/6 "2026-02-12T13:56:23Z")

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Do you use your brain, or does your brain use you? 😉

> [@hanh](#):
>
> Viscosity and surface tension?

_Capillary action_ occurs due to a combination of surface tension and adhesion.

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**Author:** ![jenkin](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/jenkin/32/48434_2.png) [@jenkin](https://forum.zcashcommunity.com/u/jenkin)\
**Post date:** [February 12, 2026, 3:09pm UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/7 "2026-02-12T15:09:04Z")

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> [@Zebraman](#):
>
> Do you use your brain, or does your brain use you?

We are all slaves of our egoistic genes… 😄

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**Author:** ![idli](https://avatars.discourse-cdn.com/v4/letter/i/5f9b8f/32.png) [@idli](https://forum.zcashcommunity.com/u/idli)\
**Post date:** [March 8, 2026, 9:48pm UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/8 "2026-03-08T21:48:43Z")

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Sleep, but turns out nobody really understands how it works.

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**Author:** ![lilbubblegum](https://avatars.discourse-cdn.com/v4/letter/l/ee59a6/32.png) [@lilbubblegum](https://forum.zcashcommunity.com/u/lilbubblegum)\
**Post date:** [March 11, 2026, 9:35am UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/9 "2026-03-11T09:35:52Z")

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This is so true. What is sleep?

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**Author:** ![Zebraman](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zebraman/32/43159_2.png) [@Zebraman](https://forum.zcashcommunity.com/u/Zebraman)\
**Post date:** [March 11, 2026, 11:23am UTC](https://forum.zcashcommunity.com/t/what-s-something-you-use-every-day-that-you-don-t-really-understand-anymore/54652/10 "2026-03-11T11:23:57Z")

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My favourite brain function.