Sorry, been tied up for a few days...

Well, judging from the article and everyone's re-action to it, as to it being 'biological' it seems like a step in the right direction..... because the 'biological' root seems an alternative to it being 'genetic'.....which according to the article, was the reason for continuing to look to find the source...other than 'genetic'. Well, it's about time!
That puts in a whole different light....

GfS