
Paul Krugman @paulkrugman
Also the product life cycle theory of international trade, which emphasized diffusion of innovations — like peanut M&Ms, I guess — across nations — PolitiTweet.org
Sophie Hill @sophie_e_hill
IPE trivia: Raymond Vernon, the economist who came up with the obsolescing bargain model that describes interaction… https://t.co/eNdtG5Ytr7