“…Econometric and anecdotal evidence, from Keane (2006, 2009) and Keane and Feinberg (2007), points in the same direction. In particular, Feinberg and Keane (2009) find that firms' decisions to engage in either intra-firm trade in intermediates or arm's-length trade are unrelated to reductions in tariffs, so that tariff reductions do not matter at all for the increase of trade along the extensive margin. Instead, Keane and Feinberg (2007) argue that technical change in the form of better logistics management, such as just-in-time management, is primarily driving the increase in intra-firm trade.…”