this post was submitted on 27 Dec 2025
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Science Memes

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[–] ImgurRefugee114@reddthat.com 145 points 3 weeks ago* (last edited 3 weeks ago) (4 children)

The colloquial meaning is different from a topological definition. Anything with a through-hole has a hole at each end. It's an ambiguous question because the answer depends whether you're referring to a openings in the face of the object (a cylinder in the case of a straw) or the void connecting the surface openings. Perhaps the safest answer is inclusive, so three. I've been told I'm not fun at parties.

[–] SpaceNoodle@lemmy.world 23 points 3 weeks ago (9 children)

You could make infinite indentations in an object with zero holes. That's a very poor definition for a hope topologically.

[–] ImgurRefugee114@reddthat.com 20 points 3 weeks ago

I'll give it a try and get back to you

[–] Tlaloc_Temporal@lemmy.ca 14 points 3 weeks ago (20 children)

And yet each indentation could hold something, like cheese or a kitten, so each indentation in functionally different from a smooth surface.

Deforming a shape changes it, thus topology is a special case of specifically ignoring most aspects of a shape.

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[–] Smoogs@lemmy.world 14 points 3 weeks ago

It’s ok, the people who tell you that weren’t invited to any of the parties either.

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[–] Kolanaki@pawb.social 51 points 3 weeks ago (5 children)

A straw has 1 hole that goes all the way through.

[–] DragonTypeWyvern@midwest.social 15 points 3 weeks ago (8 children)

The disk has two holes separated by a lesser distance

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[–] tomiant@piefed.social 40 points 3 weeks ago (11 children)

I mean no matter how you look at it it's just the one hole.

In fact, all holes are the same hole.

If you think about it.

[–] NichEherVielleicht@feddit.org 37 points 3 weeks ago (1 children)

That's what my uncle said.

[–] tomiant@piefed.social 9 points 3 weeks ago (3 children)

The mother of all holes.

The motherhole if you will.

[–] Viking_Hippie@lemmy.dbzer0.com 9 points 3 weeks ago* (last edited 3 weeks ago)

The Motherhole

I was in a band called that!

We mostly played blues standards and industrial metal and our live shows prominently featured custom inflatables.

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[–] WhyIHateTheInternet@lemmy.world 27 points 3 weeks ago (1 children)
[–] HeyThisIsntTheYMCA@lemmy.world 6 points 3 weeks ago

Courtesy of the internet

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[–] teolan@lemmy.world 40 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

Two people kissing make a single continous tube going from one anus to the other

[–] HugeNerd@lemmy.ca 15 points 3 weeks ago

Great now I need a new folder.

[–] NachBarcelona@piefed.social 30 points 3 weeks ago (1 children)

Who the fuck thinks that a straw has 2 holes?

[–] roguetrick@lemmy.world 10 points 3 weeks ago (1 children)
[–] NachBarcelona@piefed.social 12 points 3 weeks ago (12 children)

I think topologically I have only those: 

  1. Mouth to ass (oh yeah)
  2. Left nostril 
  3. Right nostril 
  4. Left Eustachian tube
  5. Right Eustachian tube 
  6. Right tear duct 
  7. Left tear duct

No piercings or anything, so that's it.

[–] Scipitie@lemmy.dbzer0.com 13 points 3 weeks ago (1 children)

Nostrils and mouth are connected, topologically you could therefore have ass to left nostril with the mouth being an own opening!

That said I really really hope you forgot your uthera at least. Which is a curious question back to the subject: is it a topological hole if the opening is only to the insides of the corpus? (Thinking about the reproductive parts of either sex specifically).

[–] NachBarcelona@piefed.social 10 points 3 weeks ago

I think topologically they don't count, that's why I didn't count the urether/urethra. 

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[–] Rhoeri@piefed.world 26 points 3 weeks ago (2 children)

A straw has one hole that is open to two entrances. Like a single tunnel. We never say that a tunnel has two holes.

[–] Nomorereddit@lemmy.today 7 points 3 weeks ago (1 children)
[–] bricklove@midwest.social 7 points 3 weeks ago (2 children)

We mustn't say that. It is forbidden.

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[–] HeyThisIsntTheYMCA@lemmy.world 7 points 3 weeks ago (2 children)

I got a T shaped cat tunnel. It's got two holes. I think. Topology can go suck a lemon

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[–] gedaliyah@lemmy.world 21 points 3 weeks ago (1 children)

Topologically, people are toroids.

[–] untorquer@lemmy.world 21 points 3 weeks ago (16 children)

This suggests the reverse is true, that every hole is at minimum a tube.

I'm throwing out all my cups today. I'll jut drink from my plates.

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[–] halvar@lemy.lol 16 points 3 weeks ago (8 children)

Ehh. I'm not sure it's very constructive to make a topological argument from a debate people usually think about as a linguistic one.

[–] Derpenheim@lemmy.zip 7 points 3 weeks ago

I like to think of this particular example as a sort of reminder that we need to be specific on what grounds we are arguing. Colloquially, and for the sake of practicality, the straw has two holes. You would one hole or the other is in the drink, or clogged. But topologically, yes, there is only one hole.

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[–] Earthman_Jim@lemmy.zip 15 points 3 weeks ago

A straw has 1 hole with two ends... this is dumb

[–] Epzillon@lemmy.dbzer0.com 15 points 3 weeks ago

Vsauce, Michael here.

[–] MeowerMisfit817@lemmy.world 12 points 3 weeks ago

So, I kinda just woke up from a nap and my still confused mind thought the meme said the straw had four holes.

[–] eronth@lemmy.dbzer0.com 11 points 3 weeks ago (2 children)

Got it, a CD has 2 holes as well.

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[–] VoterFrog@lemmy.world 10 points 3 weeks ago (1 children)

A straw has zero holes. It's just a flat piece of plastic wrapped around and attached to itself. Ain't nobody drilling holes through plastic to make straws.

[–] ytg@sopuli.xyz 9 points 3 weeks ago (1 children)

Try that argument with your local topologist

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[–] kazerniel@lemmy.world 9 points 3 weeks ago (2 children)

that meme format makes me feel old... I used to see it in like 2008 👴

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[–] hansolo@lemmy.today 9 points 3 weeks ago (4 children)
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[–] Lizard@discuss.tchncs.de 9 points 3 weeks ago

Technically, the digestive system (i.e., the full gastro intestinal tract) is considered as part of the "outside" of the body, acting as an external surface similar to the skin. The space that an object can travel through without crossing a cell membrane or entering blood or tissue is called "lumen". So the same intuition as in the meme actually holds true here, too.

[–] comrade19@lemmy.world 7 points 3 weeks ago (5 children)

We have a pee hole and a poo hole and a mouth hole and a nose hole do really we've got a few holes going on there

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[–] Taleya@aussie.zone 7 points 3 weeks ago (3 children)

How about the digestive system? I'm pretty sure the stomach forms a break

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