In a stroke of imaginative genius our understanding of consciousness was radically transformed, but in an entirely unexpected way. Critical clues came from diffuse nerve nets and, even more extraordinarily, plant neurobiology. Banished forever was the idea that the brain alone was the seat of consciousness. Rather, it is an 'antenna' embedded in a hyperdimensional matrix. The depths of reality are only now being uncovered, but now the springs of imagination, intuition, abstraction and even pre-cognition are revealed. What was once called the unreasonable effectiveness of mathematics was simply a clue to a superbly structured universe where mind is an integral component, instantiated at the big bang or maybe even before? Future exploration offers dizzying prospects, but we are not the first to venture forth. Far in advance of the emergence of human consciousness, innumerable galactic civilisations had slipped into what we now call the Mortimer Manifold.