 There are a number of main ideas to be investigated. First, there is the suggestion that The Turing Test provides logically necessary and sufficient conditions for the attribution of intelligence. Second, there is the suggestion that The Turing Test provides logically sufficient—but not logically necessary—conditions for the attribution of intelligence. Third, there is the suggestion that The Turing Test provides “criteria”—defeasible sufficient conditions—for the attribution of intelligence. Fourth—and perhaps not importantly distinct from the previous claim—there is the suggestion that The Turing Test provides (more or less strong) probabilistic support for the attribution of intelligence. We shall consider each of these suggestions in turn.