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Physics, Astronomy & Cosmology / Re: Does our material reality exist because we observe it?
« on: 25/11/2020 08:06:50 »Quote from: OP
If we observe the world we create one reality out of many possibilities.Who is "we"?
It certainly isn't dependent on intelligent observers who understand the existence of quantum theory, since the universe existed before the year 1900.
- They don't even have to be human, since my dog experiences the universe
- They don't even have to be alive, since a photon bouncing off something confirms its reality
The "observer" in quantum theory is anything that interacts with the system (where the "system" might be the entire universe).
One of the problems with quantum computers is that despite great efforts to cool them to almost absolute zero and shield out all electromagnetic radiation, almost anything interacts with them and changes their state, often within nanoseconds.
- Our universe is obstinately insistent on being "real"
See: https://en.wikipedia.org/wiki/Quantum_decoherence
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