The seventeenth and eighteenth centuries in Britain saw the proposal of so many endeavors called "projects"--a catchphrase for the daring, sometimes dangerous practice of shaping the future--that Daniel Defoe dubbed his era a "Projecting Age." These ideas spanned a wide variety of scientific, technological, and intellectual interventions intended for the betterment of England. But for all the fanfare surrounding them, few such schemes actually materialized, leaving scores of defunct visions, from Defoe's own attempt to farm cats for perfume, to Mary Astell's proposal to charter a college...