Introducing his students to the study of the human brain Jeff Lichtman, a Harvard Professor of Molecular and Cellular Biology, once asked: “If understanding everything you need to know about the brain was a mile, how far have we walked?” He received answers like ‘three-quarters of a mile’, ‘half a mile’, and ‘a quarter of a mile’. The professor’s response? “I think about three inches.” Last month, Lichtman’s quip made it into the pages of a new report by the Royal Society which examines the prospects for neural (or “brain-computer”) interfaces, a hot research area that has seen billions of…
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