> You're saying that we should have left medical decisions in the hands of the local purveyors?
Not what I was trying to say; I apologize if I was unclear. Rather, my point was that during times past, in many cases it would have been better if doctors had not applied any treatment to patients. Not because doctors were fools, but simply there wasn't enough rigor around assessing the effectiveness of treatments.
So too do I advise this for the field of economics. Not to say that we shouldn't strive for rigor, but until we have it I recommend the "doctors" (i.e. economists) refrain from applying treatments to their "patients" (i.e. the nation via policy prescriptions).
> Soon we'll be in the era of evidence based economism, and we'll see a huge increase in the effectiveness of it's utilization.
An optimistic view that I do not share. I recommend the talk "Science, Knowledge, and Freedom" by Jim Manzi[0]. In short, observations in the "soft sciences" of psychology, sociology, and economics do not generalize across different times and cultures in the way that observations about physics, chemistry, and biology do.
[0]https://www.youtube.com/watch?v=N4c89SJIC-M