At least one of the following statements is most likely true:
1. It is unlikely that human civilization will reach a level of technological maturity capable of producing simulated realities, or such simulations are physically impossible.
2. A comparable civilization attaining the aforementioned technological status will probably not produce a significant number of simulated realities, for a number of reasons, such as the diversion of computing power for other tasks, the ethical considerations relating to it. to detention of captive entities in simulated realities, etc. .
3. All entities with our overall set of experiences almost certainly live in a simulation.
— from Bostrom's simulation argument