If you're interested in this topic, I highly recommend this long series of articles: http://www.newworldeconomics.com/archives/tradcityarchive.html http://www.n

If you're interested in this topic, I highly recommend this long series of articles: http://www.newworldeconomics.com/archives/tradcityarchive.html http://www.newworldeconomics.com/archives/tradcityarchive.ht...