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In an influential article in the Annual Review of Neuroscience, Joshua Gold of the University of Pennsylvania and Michael Shadlen of the University of Washington sum up experiments aimed at discovering the neural basis of decision-making. In one set of experiments, researchers attached sensors to the parts of monkeys’ brains responsible for visual pattern recognition. The monkeys were then taught to respond to a cue by choosing to look at one of two patterns. Computers reading the sensors were able to register the decision a fraction of a second before the monkeys’ eyes turned to the pattern. As the monkeys were not deliberating, but rather reacting to visual stimuli, researchers were able to plausibly claim that the computer could successfully predict the monkeys’ reaction. In other words, the computer was reading the monkeys’ minds and knew before they did what their decision would be. The implications are immediate. If researchers can in theory predict what human beings will de