Mathematical Conundrum or Not? Number Three Gabriel's Horn is a mathematical paradox, and, like I said before, this is the math section for discussion of math topics.
Any mathematician of any sort, and any philosopher with an interests in mathematics, generally finds that interesting. It is definitely worthy of contemplation and discussion. If you can't wrap your head around that notion, then maybe, just maybe you don't belong here.
Star Trek fans talk about Star Trek, as mathematicians and mathematically incline philosophers talk about math. There is no greater reason beyond that simple fact. Those that want to make it out as if there is some other hidden agenda here are drama seekers.