Can we do nothing to stop or even slow what seems a mechanized approximation of an army of marching Huns? But wait. In much of the world, we negotiate climate and nuclear arms deals; we regulate the spread of disease and firearms; we take diplomatic or even military action against dictators; and build defenses against cyber attacks by rogue nations. In all these cases, we are seeking a rational de-escalation of a perceived existential threat. Do the robots and their makers—in Silicon Valley, Japan, and China—place our way of life in less jeopardy? And if they are as dangerous, are they truly unstoppable, akin to a force of nature? Given the political havoc already wreaked in part by working-class discontent, can we do nothing to stop or even slow what seems a mechanized approximation of an army of marching Huns?”