You might have heard the news: Our world could be a clever computer simulation that creates the impression of living in a real world. Elon Musk brought up this topic a few weeks ago. Truth be told — he is probably right. However, there is a very important point missing in this whole “real vs. fake” discussion: It actually makes no difference. But first…why might our world be a simulation?

Musk is nowhere near the first one to suggest our world might be fake. The idea reaches back to the ancient Greeks, though what we call a computer simulation, the ancient Greeks called a dream.

The first thing to realize is this: Our perception of reality is already separate from reality itself.

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