Neuroscientist, Oxford; President, British Association for the Advancement of Science; author of The Mind's Brain
"Most human beings perform effortlessly a variety of tasks that are computationally extremely difficult (such as seeing, holding objects and understanding speech); but they are generally poor and vary enormously in tasks that are computationally easy (such as solving puzzles, doing mathematics and science). Given that the latter skills are apparently as biologically valuable as the former, does this disparity reveal a fundamental limitation of the human brain?"