There are hundreds of possibilities between those two scenarios, though. Why are those the only two options? Replacing neurons with stem cells by shoving them up our nose? Where did you come up with that treatment? And the “epigenetic theory” or any other theory has not been proven yet, so don’t set your sights on risky demethylating agents that have devastating side effects on the cancer patients that use them…
We need to be open to the cause of PFS before we start talking about extremely unlikely treatments. Only way to get to the cause of PFS is to be patient and wait for the current studies, and keep on raising money for future projects. Without reseach, we’re literally just guinea pigging ourselves and reporting whether or not supplements/drugs help us out.