# Earth is Enclosed in a Giant Planetarium Observations alone can never rule out the theory that the Earth is enclosed in a giant planetarium showing us a simulation of a heliocentric solar system; and that outside the planetarium there is anything you like, or nothing at all. Admittedly, to account for present-day observations the planetarium would also have to redirect our radar and laser pulses, capture our space probes, and indeed astronauts, send back fake messages from them and return them with appropriate moonrock samples, altered memories, and so on. It may be an absurd theory, but the point is that it cannot be ruled out by experiment. Nor is it valid to rule out any theory solely on the grounds that it is ‘absurd’. So then how do we rule it out? --- Date: 20241024 Links to: [Fabric of Reality](Fabric%20of%20Reality.md) pg 77, [Galileo vs the Inquisition](Galileo%20vs%20the%20Inquisition.md) Tags: References: * []()