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Marginal Revolution makes an excellent point in a recent post: Don't underestimate the blogosphere's power as a learning tool. With instant feedback, thousands of view points, and a harsh criticism just a click away, blogs have put the human exchange of ideas into overdrive. Whether or not one's views are initially right or wrong, in the end you'll be much richer for the experience of hunting down information and opinions then debating them with anyone around the world and in mere seconds.

People who learn economics through the blogosphere also receive feedback, especially if they sample dialogue across a number of blogs of differing perspectives. The feedback comes from which arguments other people found convincing. Do the points you wanted to hold firm on, or cede, correspond to the evolution of the dialogue? This feedback is not as accurate as Rybka but it's an ongoing test of your fluid intelligence and your ability to revise your opinion.

Not many outsiders understand what a powerful learning mechanism the blogosphere has set in place.