Explain Bostrom's Trilemma regarding the Simulation Hypothesis. Discuss the implications of at least one of the three propositions being 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. Argue which proposition you find most plausible and why.