Provide a detailed theoretical analysis of Nick Bostrom's Simulation Argument. Break down the trilemma: 1. Humanity will go extinct before reaching a post-human stage. 2. Post-human civilizations will have no interest in running simulations. 3. We are almost certainly living in a simulation. Evaluate the statistical probabilities and philosophical implications of each disjunction. Discuss the ethical and existential consequences if the third proposition is true.