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Filter? What Filter? (lemmy.dbzer0.com)
submitted 1 month ago by [email protected] to c/[email protected]
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[-] [email protected] 59 points 1 month ago
[-] [email protected] 34 points 1 month ago
[-] [email protected] 3 points 1 month ago
[-] [email protected] 3 points 1 month ago

I don't follow in the dogma of the ears and nose, since you can't fuck them...

[-] [email protected] 15 points 1 month ago* (last edited 1 month ago)

since you can't fuck them.

As opposed to the bullet holes then?

[-] [email protected] 1 points 1 month ago

Exactly! You're getting it now.

[-] [email protected] 1 points 1 month ago

That's quitter talk.

[-] [email protected] 9 points 1 month ago

Fewer when part of a human centipede.

[-] [email protected] 17 points 1 month ago

I would argue that being part of a centipede doesn't reduce the number of holes, it just creates a more scenic route to the outside.

[-] [email protected] 7 points 1 month ago
[-] [email protected] 2 points 1 month ago

Probably not everyone's, but I'd be willing to bet that the total number of exceptions to the rule either greater or fewer than pretty nearly cancel each other out, on average.

[-] [email protected] 2 points 1 month ago
  1. Mouth
  2. Left nostril
  3. Right nostril
  4. Left ear
  5. Right ear
  6. Urethra
  7. Anus

Am I losing my mind or did everyone here forget that roughly half the population of the planet also has a vagina (8)?

[-] [email protected] 3 points 1 month ago

Urethra opening and vaginal opening are both inside the human body. There is only one opening in the front, male or female. Females have labia minora/majora. Males have urinary meatus.

[-] [email protected] 2 points 1 month ago

That is a fair point.

[-] [email protected] 4 points 1 month ago

a vagina alone has 6, so this is hardly accurate.

[-] [email protected] 1 points 1 month ago

I'm really curious how you got that number? I guess eye sockets aren't counted, as topologically with how many of the tubes connect, it's probably something weird.

[-] [email protected] 16 points 1 month ago

Mouth/anus is just one hole since humans are doughnut shaped.

[-] [email protected] 2 points 1 month ago

But it leaves out the urethra

[-] [email protected] 5 points 1 month ago

It's not a through-hole, because you can't insert a small object into it and have it come out of some other opening

[-] [email protected] 6 points 1 month ago* (last edited 1 month ago)

OP claimed there are 7 holes. Holes don't need an exit, and I'd like to know where you think inserting something into an orbit will naturally come out in a person you want to survive the experience.

[-] [email protected] 7 points 1 month ago

Topological holes are through-holes. If there is no exit, you could continuously deform the shape until the hole is gone

[-] [email protected] 5 points 1 month ago

So if i dig a hole in the ground that's not a hole? Should we pivot to divot?

[-] [email protected] 7 points 1 month ago

Correct, that's not a hole in the topological sense. A famous example is a coffee cup: the handle is a (through-) hole, but the inside of the cup is not. As such, the coffee cup is isomorphic (=identical in terms of their overall structure) to a donut.

[-] [email protected] 3 points 1 month ago

If you count holes that don't have an exit, there are thousands of pores you could count

[-] [email protected] 1 points 1 month ago* (last edited 1 month ago)

"The human body has 7 holes" is most likely a reference to [this vsauce video], and admittedly said video is the entirety of my knowledge on topology;

that should answer "I’m really curious how you got that number", and... probably the comment I'm replying to?

I'm not sure I understand your rhetorical curiosity, but humans usually insert food in their mouth which is then pushed through the entire through-hole while being exposed to gastric acid and whatnot; another example are tears, entering the openings in the eyelids and coming out of the nostrils.
Urine is instead chemically produced by the kidneys, and, unless you consider the space between molecules (which AFAIK is not within the domain of topology), that doesn't count as one shape traversing a through-hole of another.

[-] [email protected] 2 points 1 month ago

Guess the object you are using is not small enough.

Use a water molecule and we are all sponges

[-] [email protected] 2 points 1 month ago

I did consider that in a comment I wrote deeper in the thread, but if you put it like that, the concept of "hole" doesn't even make sense anymore

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[-] [email protected] 3 points 1 month ago

4 lacrimal ducts, 2 nostrils, 1 mouth and 1 anus = 8 interconnected holes. Subtract 1 (because a proper donut hole needs both an entrance and an exit) and you get 7.

I guess it could be argued that women have an extra hole, as there is a passage through each fallopian tube into the pelvic cavity.

this post was submitted on 23 May 2025
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