 In reply, a defender of FSCs could note that not all such cases are so far removed from everyday life. There is nothing especially bizarre about Locke’s content prisoner (an early kind of FSC) or Frankfurt’s own example of the dormant addiction. And there is no fantastic technology or malevolent being in another FSC, the “driver instruction vehicle” with dual controls: Sally steers her car to the right, which the instructor is happy to allow. But 