Less Is More?

I would like to hear more from this fellow with a medical background about just how "Less Is More" applies in health care. There are times, for example, when "later" is not "sooner" in diagnosis. So how to differentiate? There is probably a book in it, but maybe a thumbnail would do. Plonk has clearly given it a lot of thought, but it's left as a teaser in this article. Thanks!