how many holes does a donut have? one. a straw is just a tall plastic donut.
two holes... smdh... kids these days
this post was submitted on 04 Jul 2023
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What if you tie a knot in the straw? Still one?
Just copying my response to another comment asking the same:
That doesn't change the topology though. Or at least you can't without it no longer being a straw.
A straw is the product of a circle and an interval. Either the knot doesn't fully seal the interval, meaning it's topology is maintained, or you completely seal the straw, changing it from 1 long interval to 2 separate intervals, changing the object entirely.
In this situation, the straw would not be completely sealed. It is clearly inefficient, but technically there exists a path for which there is a level of force that could applied that would make the straw function.
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I believe the confusion lies in the word "holes" when you are thinking about openings or exits. Just my 2 cents.
A regular straw has zero holes. The central cavity, through which beverages flow, is not part of the straw, and hence it's endpoints are not holes in the straw.
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A hole is an opening on (something), and a TUNNEL is an end that leads to a hole that leads to another hole and to another end. Therefore, it has zero holes, but one (very small) tunnel.
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I thought one hole intuitively, then I started thinking... what about those y shaped straws or medical hoses that split.... one hole? Two holes? Three?
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It has two exits, one hole.
If you drill a hole in a block of wood you create one hole not two, note that whether or not the drill exits the opposite side, only one hole has been created despite differing numbers of exits.
What if you drill through a book?
You'll be banned from the bookstore
A straw has zero holes
Then how does the liquid go through it
By the logic of most of the comments in here, does this mean most people are wrong when they say they are digging a hole???
I'm Diggy Diggy crater
What about a tank that has one input and one output hole, technically much like a straw? This is why I call the edges of a straw a hole, so straw has two holes.
Or, what about drinking straws with more than one succy pipe?
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