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Echoing a paper by philosopher Nick Bostrom, Elon Musk thinks there is a good chance humankind is living in a simulated reality.

The general idea of our reality boils down to three possibilities — humans go extinct before we are able to run a simulation of this size, humans choose not to run ancestor simulations, or we are currently participating in such a simulation. According to Musk, "There's a one in billions chance we're in base reality." Simulation or not, the vast room for debate on the topic has led to the conversation being banned in a hot tub by Elon Musk and his brother.

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