'The Nightmare of Sleep' is part one of the 'Evolution of Imagination' which attempts to define what imagination is, how it functions, and trace its unique biological development in us, the Universe's first Time Lords. Every time you touch your forehead you are less than seven millimetres away from a biological computer with more processing power than all the world's computers linked together. Its main function is to run a unique application called 'Imagination' which allows us, Homo sapiens, to live in two coexisting worlds, both the physical and the virtual, simultaneously. Imagination is...