• Question: How do we know that we aren`t sleeping

    Asked by zoe to Sandra on 8 Mar 2017.
    • Photo: Sandra Greive

      Sandra Greive answered on 8 Mar 2017:

      Another good philosophical question. How do we know if we are dreaming that we are awake and awake when we think we are dreaming? I don’t know for sure. What I do know is that when I am awake, time is linear and seems to move slowly, and regular physical and social rules apply (such as gravity feels constant) and I have no special powers and people don’t change faces. Also if I haven’t been sleeping well I am very grumpy, my brain doesn’t work well and I feel tired all the time.

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