The definition of a hole is quite simple, really (given in the other comment about topology). Or at least that's the definition of hole that works best with the real world.
(As my math teacher used to say, everything is just a bunch of conventions : We could say that lim x/x x->0 = 3, but a lot of things in the real world wouldn't be as coherent as they are with that)
Also a straw has one hole.
Another more interesting question in my opinion : If you dig a hole in a hole is it 1 hole or 2 holes ?
TheGeekno99 t1_je77brv wrote
Reply to comment by nonresponsive in You can't dig half a hole by Leafsong-Warriors
The definition of a hole is quite simple, really (given in the other comment about topology). Or at least that's the definition of hole that works best with the real world.
(As my math teacher used to say, everything is just a bunch of conventions : We could say that lim x/x x->0 = 3, but a lot of things in the real world wouldn't be as coherent as they are with that)
Also a straw has one hole.
Another more interesting question in my opinion : If you dig a hole in a hole is it 1 hole or 2 holes ?