Discuss the Simulation Hypothesis proposed by Nick Bostrom. Evaluate the argument that if it is possible for a civilization to reach a post-human stage and run vast numbers of simulations of their evolutionary history, then at least one of the following three propositions must be true: (1) The fraction of human-level civilizations that reach a post-human stage is close to zero, (2) The fraction of post-human civilizations that are interested in running ancestor-simulations is close to zero, or (3) The fraction of all people with our kind of experiences that are living in a simulation is close to one. Analyze the logical validity of this trilemma and discuss its potential counter-arguments regarding consciousness and substrate independence.