RE: Cats and quantum computers have more in common that one may think of…
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Maybe one of the issues here is the definition of measurement.
Most people would put an anthropomorphic meaning to this word. But I guess the masurement doesn't have to be observed by a human being to be a measurement, right?
Most particles in the universe are not being observed by conscious beings but I guess that if such particle in a state of superposition interacts with macroscopic object then it will get a definite state. Is this the interpretation of physicist?
It's so mind bending...
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Of course. The observer can be a human, a computer, a machine, etc.
Some physicists have actually claimed that a conscious being was needed. But the role of consciousness is still unclear (and subjects of debates). To answer the rest of the comment: In quantum mechanics, the superposition is always reduced to one of its component after a measurement. Until there, we just have a bunch of options with given probabilities.