Analyze Nick Bostrom's Trilemma regarding the Simulation Argument. Present a detailed theoretical discussion examining the likelihood that at least one of the following propositions is true: (1) The human race is very likely to go extinct before reaching a 'posthuman' stage; (2) Any posthuman civilization is extremely unlikely to run a significant number of simulations of their evolutionary history; (3) We are almost certainly living in a computer simulation. Argue which proposition is the most logically sound based on current technological trajectories.