I don't design cars. I'm not a designer. I know what I desire to be built I know what the end result is the horsepower the competition we'll be working against - but I leave it to the people who work with me to put it all together. I don't do anything.
In 1963 and later papers I pointed out that the special market characteristics of medical care and medical insurance could be explained by reference to differences in information among the parties involved.