Gunn’s sensies and Nozick’s experience machine are virtual reality devices of a kind. They are asking, “Given the choice, would you spend your life in this kind of engineered reality?” Like Gunn’s protagonist, Nozick says no, and he expects his readers to do the same. His view seems to be that the experience machine is a second-class reality. Inside the machine, one does not actually do the things one seems to be doing. One is not a genuine autonomous person. For Nozick, life in the experience machine does not have much meaning or value.