not much... I missed the Development class, in which the lecturer talked a bit more about the magic of academia, ending apparently in a ta-daa moment where everything suddenly fell into place and became relevant to studying Development's theory and practice.
In the International Political Economy class the lecturer talked a bit about the development of the world economy, not really saying anything you would not already know. More interesting, but also more annoying, were the questions from some of my classmates. These cast the world trading system as Bad, and the lecturer as a representative thereof, so there was a lot of "but what about...?" style questions, which maybe missed the point that we were there to learn the history of the General Agreement on Tariffs and Trade and not engage in a debate about whether trade was classic or dud. The interesting bit was maybe in looking at how for all that arguments broadly in favour of free trade between countries have essentially won the battle where it matters, they have not really won hearts and minds, particularly of graduate students who may well find themselves making decisions in the future. So perhaps if all that Kuhnian paradigm shift stuff has anything going for it we could be going back to the 1930s at some point over the next ten years or so.