A saying of David Hilbert I am not sure that a university is not a bathhouse...
Anyway the context is the excerpt of tim wood's first post.
Obviously every x is different from y, but x has properties or qualities similar to y.
:-)
Anyway if something is too easy you lose interest in it, this is why life is so hard.
This is the case also in mathematics, if a problem you pose is too easy people won't be interested of course there's the saying of Feynman:
" According to the Nobel Prize-winning physicist Richard Feynman (Feynman 1997), mathematicians designate any theorem as "trivial" once a proof has been obtained--no matter how difficult the theorem was to prove in the first place. There are therefore exactly two types of true mathematical propositions: trivial ones, and those which have not yet been proven."
https://mathworld.wolfram.com/Trivial.html
So perhaps all of math is uninteresting and boring, though I would like to think that the fact that there are difficult proofs is to the contrary to Feynman's anecdotal quote.