Neil deGrasse Tyson explores whether we live in a simulation, what it means for free will and meaning, and explains why humans won't reach Mars despite SpaceX ambitions—revealing that major space exploration requires geopolitical threats, not just technological capability. We're likely either the first universe to create simulations or the last unable to, making us statistically more probable to be real than simulated, improving odds from a trillion-to-one against us to roughly 50-50.