In 2003 Nick Bostrom published a short paper that turned a stoner question into a probability puzzle. The reasoning is so clean it should be uncomfortable. Option one. No civilisation ever reaches the technological maturity to run convincing ancestor simulations. Pandemic, war, asteroid, AI. We die first. Option two. Civilisations reach maturity but choose not to run such simulations. Disinterest, ethics, prohibition. Option three. They do reach maturity and they do run simulations. In which case, basic math: one base reality, billions of simulated ones. The probability that any randomly selected conscious being is in the original is statistically negligible. You don't get to dismiss the conclusion without rejecting one of the premises. Try it. Pick the one you don't believe.