Over the past half-century, Artificial Intelligence has been all the rage among computer scientists, and among many other scientists and philosophers and the general public. Can machines think? Is it possible that a computer could have intentions and desires and understanding of its own? Many otherwise well-informed people have taken it for granted that machines are capable of thought, particularly if a substantial level of complexity is reached. Several philosophers and scientists have argued that AI is not possible -- machines will never be capable of thought. They are right to deny the possibility of AI. The arguments against AI are several.