I wasn't sure where to put this, so I started a new thread. But we here again and again from the government that anything new must be evidence based. The IOM contract says nothing about field testing whatever they come up with. Unless it can actually differentiate people with ME/CFS in the real world, it is not based on evidence. What it is is an ivory tower exercise in evaluating a body of literature where much of the literature is based on weak definitions. Feedback from stakeholders means nothing unless they actually act upon it in a significant way. And from what I saw of their treatment of GWS, they listened and then disregarded all the feedback.