We spend about one-tenth of our waking hours completely blind. Only one percent of what we see is in focus at any one time. There is no direct fossil evidence for the evolution of the eye. In graceful, accessible prose, novelist and science writer Simon Ings sets out to solve these and other mysteri[...]

* We spend about one-tenth of our waking hours completely blind * Only one per cent of what we see is in focus at any one time * You don't need eyes to see - blind volunteers have been taught to see through their chests Through a spellbinding mix of scientific research, mathematics, philosophy, hist[...]