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112

Can we settle this: how many holes does a straw have? (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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At work we somehow landed on the topic of how many holes a human has, which then evolved into a heated discussion on the classic question of how many holes does a straw have.

I think it's two, but some people are convinced that it's one, which I just don't understand. What are your thoughts?

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[–] [email protected] 2 points 1 year ago (1 children)

So how does one “dig a hole?” Straight to China? Or whatever is opposite of you?

[–] [email protected] 2 points 1 year ago (1 children)

Topologically, yes. Buy you could also go down a bit, make a lateral tunnel, then pop back up.

[–] [email protected] 3 points 1 year ago* (last edited 1 year ago) (1 children)

So what you are saying is, if I dig a hole that doesn't go anywhere, then that's not really a hole?

[–] [email protected] 1 points 1 year ago (1 children)

In topology, yes. It must go through to count.

[–] [email protected] 2 points 1 year ago (1 children)

That's fascinating. So most of what I would call "holes" are what, in topographical terms, hollows? Depressions?

[–] [email protected] 2 points 1 year ago

I don't even know if they have a name for that since it can simply be undone by stretching the object, which is allowed under topological rules.