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Europeans have been coming to America and commenting about the nature of American technology for over a century. Despite the evident economic changes in the course of this century, the comments on the differences between American and European technology—or, more properly for the nineteenth century, on the differences between American and British technology—have stayed remarkably constant. The factors noted by a few British visitors of the 1850's, perhaps the first technically qualified foreign group to take a careful look at American manufacturing, still form the backbone of discussion today. Chief among the factors noted is the high cost of American labor, but this explanation of American peculiarities by no means stands alone.