Nick Bostrom's simulation argument is not "we're in the Matrix" — it's a precise trilemma. At least one of these must be true:
- Civilizations almost always go extinct before becoming able to run high-fidelity ancestor simulations; or
- Advanced civilizations almost never choose to run them; or
- We are almost certainly living in a simulation.
The logic
If even a few advanced civilizations run many detailed simulations of their past, then simulated minds would vastly outnumber original biological ones. By sheer counting, a randomly-selected conscious observer (you) is far more likely to be one of the simulated multitudes than one of the rare originals.
The unsettling move isn't claiming we're simulated — it's that to deny it, you must bet civilizations either die young or never press "run."
It connects to The Technological Singularity (who would have the compute) and The Hard Problem of Consciousness (could a simulated mind truly experience?).
Related: The Technological Singularity · The Hard Problem of Consciousness · The Singleton