Well, it's not as if Positivism doesn't exist in Economics, so I wouldn't dismiss the entire field just like that. Antipositivism may seem to be the dominant view (and indeed, it may be). However, I cannot help but feel that this conversation is framed very much around macroeconomics, and if people had more exposure/knowledge of other branches of economics, we might have a little more interesting discussion than outright dismissal by the second sentance.

Also, do you have to link that ruddy xkcd comic on every comment? I think most people saw it the first 2 times you posted it.