— discworldtour: This strange loop has a curious...

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discworldtour
discworldtour

This strange loop has a curious effect on causality. We get up in the morning and leave the house at 7:15 because we have to get to work by 9 o’clock. Scientifically, this is a very bizarre form of causality; the future is affecting the past. That doesn’t normally occur in physics (except in very esoteric Quantum things, but let’s not get distracted). In this case, science has an explanation. What causes you to get up at 7:15 is not actually your future arrival at work. If in fact you fall under a buss and never make it to work, you still got up at 7:15. Instead of backwards causality, you have a mental model, in your brain, which is your best attempt to predict the day ahead. In that model, realized as buzzing electrons, you think that you ought to be at work by nine. That model, and its expectation of the future, exists now, or more accurately, a short time in the past. It is that expectation that causes you to get up instead of lying in and having a well-deserved snooze.

– that expectation is the worst, then | Terry Pratchett, Ian Stewart, and Jack Cohen, The Science of Discworld II: The Globe