Knighton Diffusion as Strategy: The Limits of American Productivity in the 19th Century Toward the end of Capital's first volume, Marx relays an "extremely doleful anecdote" from E.G. Wakefield, who complains of American labor's unreliability, its susceptibility to the seductions of the wageless frontier. While the westward movement of American labor power comes to be celebrated by Marx and others as a release valve for unassimilable creative energies, most commentators are far less charitable, denigrating the frontier as an "idle" space, and maligning flight toward it as an illusory freedom. In attempting to contain and regulate this flight -- and to thereby stabilize its resource of labor power -- the American state confronted anew an old problem. My paper seeks to demonstrate the very uniqueness of the American response to this quandary, through comparison with English efforts to stabilize labor power since the 16th century. Drawing on the work of Marx, Antonio Negri, and Gilles Deleuze, I argue that this specific character of America's 19th-century economic landscape makes possible the embracing of modes of activity -- autonomous, self-determined, and transient -- exterior to the disciplinary net of the wage, and suggestive of a still-viable political strategy. The paper aims to correct the reduction of frontier movement to either statist "manifest destiny," or to what Wakefield called a "barbarizing tendency" to evade capitalist institutions. In lieu of these misrecognitions, I introduce the concept of diffusion. The concept is suggestive at once of both decentralization, as well as wastefulness and unproductivity; it illuminates the attempt in the 19th-century to renegotiate, through westward movement, both spatial boundaries and those distinctions that separate "productive activity" from purported "idleness." The paper further pursues the possibility of diffusion as a tool recuperable for our present context, in which the establishing (and transcending) of temporal boundaries has arguably supplanted the spatial frontiers once crucial to the strategy.