Adverse Selection, Gresham's Law, and the Austrian School

At The Austrian Economists blog Peter Boettke has a follow up posting to his earlier question "Do People Say Silly Things About Monetarism, New Institutionalism, and Public Choice as well?" In this new posting Boettke writes,

I asked earlier why critics of Austrian economics tend to focus on the least charitable reading of the position held within the school. But today I'd like to ask why the Austrian School of Economics often appeals to individuals who lack the intellectual prowess to make scientific contributions and the good sense to get along with others rather than antagonize them.