Update: 11/22: So, after seeing Tom Murphy’s Storify of the twitter exchange, it is now clear that Sachs was on fire – the man was engaged in several conversations at once along the lines below…and he seems to have been responding to all of them pretty coherently, and in real time. I admit to being impressed (No, seriously, click on the Storify link there and just scroll. It is boggling). So recognize that what you see below is what I saw in my feed (his other conversations were with people I don’t follow, so I didn’t realize they were ongoing). Still, glad to get geography’s foot back in the door…

So, quite by surprise, I found myself on the end of an extended twitter exchange with Jeff Sachs.  I’ve hassled him via twitter before, and never had a response. So, I was a bit taken aback to see my feed light up about 30 seconds after I tweeted with @JeffDSachs at the front end! To give Sachs credit, he stayed quite engaged and did seem to be taking on some of my points. Granted, 140 characters is hardly enough to really convey the issues at hand, but I did the best I could to represent contemporary human geography. Y’all be the judge – this is the feed, slightly rejiggered to clarify that at times Sachs and I were crossing each other’s messages – he was clearly responding to a previous message sometimes when he tweeted back after one of my tweets. Also, Samuel Danthine was also on the conversation, and I kept him in the timeline as it seems he and I were coming from the same place: