The kinds of writing produced based on 'praxeology', by people like Ludwig von Mises and Murray Rothbard, I have changed my mind to think as being not very reliable. I don't think that the arguments put forth by these Austrian Economists trying to justify when they reject empiricism and make weird assumptions are very good. This actually hurts a sizable amount of writing by these people, most of which I haven't read but any that I did end up having believed I now place very little trust in. The wikipedia synopsis of one of Mises' works should give you a fairly good idea of the kinds of assumptions he makes..
The links are fairly broad because I was admittedly trying to get a better grip on this stuff after having accepted much of it for a while, having given the whole school much benefit of the doubt early because the kinds of ideas it concluded with (stuff like lassiez-faire econ, not to regulate) fitted in with my preconcieved, often political, beliefs. Politics is the mind-killer, don'tcha know. Sorry for the lack of specific propositions.
I've read some Hayek too, he seems better, but I don't really know.
edit: changed a word to make a sentence make sense
Austrian-minded people definitely have some pretty crazy methods, but their economic conclusions seem pretty sound to me. The problem arises when they apply their crazy methods to areas other than economics (see any libertarian theory of ethics. Crazy stuff)
Admitting to being wrong isn't easy, but it's something we want to encourage.
So ... were you convinced by someone's arguments lately? Did you realize a heated disagreement was actually a misunderstanding? Here's the place to talk about it!