that whole hole debate (lol) seems to me more of a semantics thing.. I dunno<br><br>but I'd argue that a straw has 2 holes, and 1 cavity. wich some people call "the hole". for exampe: the bottle has 1 hole and 1 cavity, and when you poke a 2nd hole at the bottom, it now has 2 holes and still 1 cavity, just like a straw.<br>pants have 3 holes and 1 cavity that's just split in the middle... <br><br>I'd argue a hole needs an edge. 2 edges on a straw. 3 edges on pair of pants.<br>a donut has 1 hole, but also like, 1 infinite edge haha. ye that's an odd one<br><br>it's context dependend.<br><br>a mug has 2 holes and 1 cavity. and yes, you can squish it into a donut wich only has 1 hole, but you can also squish a cube into a sphere and you woulnd't therefore argue a cube doesn't have points or edges; so that argument seems mute to me...<br>context defines how many holes or cavities something has.<br><br>feel free to counter argument,(reply>), I was thinking the same sort of thing during that whole topic. Hole is just a poorly defined word/concept, so of course people have a wide variety of interpretations of what it means. I think we use "hole" to refer to many things that are technically different when you look closely. That's why, when you go with one definition of hole, some counter-example always seems to defy your chosen definition (like the donut in your hole vs cavity distinction).<br><br>There is no correct answer unless you very precisely define what a hole is. The point/value of asking such questions is that it gets us to think about these interesting concepts and definitions that normally go unanalyzed.