Historians have long argued that the ubiquity of the chattel slavery was an insurmountable barrier to the adoption of labor-saving technology. In response to this argument, Dale locates her Roman Industrial Revolution in the early and mid-2nd century BCE, before the large-scale influx of slaves from the conquests of Greece, Carthage, and Gaul. The Middle Republic provides a window in which, she argues, it is plausible to imagine a machine-based culture taking root. In the world Dale envisions, an industrialized Roman empire then follows a British-style path towards a constitutional monarchy (under Augustus).