It's sort of funny - a lot of the metaphysical discussions and questions were things that RJ liked to discuss and give us answers for, even if there was a limited amount of time to delve into the questions, because knowing what was impossible doesn't really give you any in-roads into how it will play out in the storyline. RJ seemed to limit his RAFOs to storylines he wanted to keep in the series, for better or for worse, in the stories - though at this point, speculation on the identities of Demandred and Mesaana seem to be beating a dead horse that had been partially decomposed, flogged, run through a glue factory and beaten with a few clubs.