James and Deborah Fallows have been visiting remote corners of the US by small plane to tease out the secrets of successful local economies. In Eastport, Maine, they heard lots of talk about the potential of Eastport's deep, ice-free harbour, and relative proximity to Europe, to attract European trade. I noted that the same case has been made for Canso, where construction of the causeway to Cape Breton in 1955 inadvertently created a similarly deep, ice-free superport. Inveterate boosterism deflator Tim Bousquet of  The Coast, a Halifax newsweekly, isn't impressed: I think boosters of both the Canso and the Eastport "superports"—and you and...