The human mind immediately may try to put them into categories or illustrate what they are about in their head.
Um I only know one of them and one is density hope this help xx
Fermat's Last Theorem was solved by Andrew Wiles. It was only solved 358 years after it was first created.
Depending on what you belive in, you go there.
For me, I don't really believe in anithing apart from been reancardnated for my next life right after I die.