venture to another reality

The world exists for us only when the senses and mind are directed towards it, and cease to exist for us the moment we silence the senses and mind. During deep sleep we do not experience the world because the senses are not active. Can you prove the reality of the world while you are deeply asleep? When you wake up from sleep other people may tell you that the world existed, but can you prove that these people existed while you were asleep?

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