Emeritus Professor of Cognitive Development at UCL’s Institute of Cognitive Neuroscience, and an expert in autism, Uta Frith says the study of brain and mind will be the big science of the 21st century and help human beings to understand themselves. The mind is not just one hopelessly entangled mass, but can be divided into surprisingly neat compartments, as if we were looking at a house with many rooms. Many people shrink in horror at this idea. ‘They are the lumpers, while I am more of a splitter,’ she says.