imho - omelettes / eggs / chickens.
You cant make an omelette without breaking eggs, so in my view this paper at least tries to home in on a defining symptom (PEM) to prove the nebulosity of the diagnosis, which is a start and moves the wider conversation in a helpful direction.
I agree diagnosis deserves a rigorous empirical basis. But the molecular definition is elusive, probably not helped in the first place by the nebulous diagnosis and eclectic cohorts.
To refine cohorts you have to refine diagnosis, but we seem to be in a situation where we need to refine cohorts before we can refine diagnosis, which is where the chicken and egg thing comes from.
So you gotta catch your chicken before you can make an omelette is all I am saying!
I am sure that made sense when I started typing.
I think I am trying to say I value this attempt to approach the difficulty of diagnosis with a rational academic perspective in a psychological headspace instead of the kind of headless chicken mental scampering which we have had from BPS approaches due to truth distorting competing interests and grubby motivations. I see this as a meaningful steer born of integrity and the start of a long journey but by no means its end. The journey of a thousand miles begins with a single step. This is one step and we need to keep going in the right direction.
So I dont want to make perfection the enemy of the good but I agree criticism is essential to create debate, improve methods and take the next steps.
I am grateful to Drs Leonard A. Jason and Joseph A. Dorri for this, I think it is a constructive contribution.