Fourth episode of The Unmanned series, “The Uncomputable” is the story of a failure: the building in the northern plains of Scotland of a giant climate prediction factory by meteorologist Lewis Fry Richardson. This enormous inverted terrestrial globe supposed to host 64,000 women-computers and able to forecast the world weather was never built. Partly shot in a wind tunnel (used for aerodynamics simulation), this episode shows the impossible attempt at building the factory and the collapse of its hypothesis of a global computation. As a storm breaks out over the construction site for the simulation, the film itself and all of the parameters are progressively turned inside out.