This video goes through a common issue that students have when thinking about gains from trade- it's not only the "price" of a trade that matters, it's the size of the trade too! Here, I implement a couple of trades of different sizes to show how some are mutually beneficial and others not, even though they all take place at the same "price." By Jodi Beggs - Economists Do It With Models http://www.economistsdoitwithmodels.com/ Facebook: http://www.facebook.com/economistsdoitwithmodels Twitter: http://www.twitter.com/jodiecongirl Tumblr: http://economistsdoitwithmodels.tumblr.com/