This is the sort of post I've written a number of times - in my head and verbally to myself. It's the nature of this problem that what we can do in our imaginations is equal to what we can do in the real world. I wonder how many posts and articles have gone unwritten in reality because they were so beautifully crafted in the mind and left there lest they be tainted by public contact. 



I found out about MD when I was looking for…