The Middle Ages was not a thousand-year period of technological stagnation between the fall of Rome and Leonardo da Vinci. It was an incredible period of invention and scientific innovation that saw major technological advances, including gunpowder, the invention of vertical windmills, spectacles, mechanical clocks, water mills, Gothic architectural building techniques, and clocks so sophisticated it took years to cycle through their full calculations, resembling an early mainframe computer more than a timekeeping device.

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