Brain science — neuroscience — is big business, big science and big research. Neuroscientists are offering to explain, mend and manipulate the mind. Many see no problems with this. For example, Eric Kandel, who won a Nobel Prize for his work on memory, said: “You are your brain.” This is an extraordinary, arid reductionism. This is the idea that you can collapse the complex phenomenon that goes on in the human mind into being simply the working of cells or molecules.