The year 2008 was one of fruitful disjunctions. I spent the fall teaching at Stanford but commuting to the University of California, Los Angeles, to cochair the inaugural Mellon Seminar in Digital Humanities. During the same period, I was curating—at the Canadian Center for Architecture, in Montreal—an exhibition devised to mark the centenary of the publication of “The Founding Manifesto of Futurism,” by Filippo Tommaso Marinetti. Whereas other centennial shows (at the Centre Pompidou, in Paris, and at the Palazzo Reale, in Milan) sought to celebrate the accomplishments and legacies of Marinetti's avant-garde, the Canadian exhibition, Speed Limits, was critical and combative in spirit, more properly futurist (though thematically antifuturist). It probed the frayed edges of futurism's narrative of modernity as the era of speed to reflect on the social, environmental, and cultural costs. An exhibition about limits, it looked backward over the architectural history of the twentieth century to look forward beyond the era of automobility.