The other day I mentioned Pete Boettke's post on Fukuyama and Hayek. Here's a good comment from that post:
"If you think about it, there is a lot of tension between the idea that society should follow principles and the idea that society evolved through experimentation.
When we suggest that society should be guided by principles, we're essentially saying that we should stop experimenting with those principles. But why should we stop? Those principles may have succeeded in the past, but we can say that we will never discover better principles in the future.
Sure private property worked well in the past, but the experiment should continue and see if we can come up with something better some would argue."
It reminds me of my comparison of Dewey the experimentalist and Rothbard the remorseless logician.