Oddly enough I have a feeling that Moridin is some how, or will be a part of rand, only the negitive half. Through out the novels we see the DO trying to induce (indirectly through Ishamael) rand to join, as well it is explictly stated NOT to kill him a number of times. Now what if the DO somehow was able to have a part of rand, some sort of other half? ... the only real reason I question this is because of Mins prediction that she said she did not tell him, about two of him combing into one, and only one surving. Rand seemed to think that this was LT, min had her doubts. I have to wonder too about when Moridin saved rand, and their balefire struck together (let's face it, the guy who saved him was a man, and rand couldn't feel him chaneling... who do we know that can use the dark power hmmm?).