Reply to post: Re: Cognito ergo universi?

No, Stephen Hawking's last paper didn't prove the existence of a multiverse

steelpillow Silver badge
Boffin

Re: Cognito ergo universi?

"Too many make the error of assuming an observer has to be intelligent or conscious. A cloud of gas will also observe anything it bumps into, whether you believe observation creates something or just discovers it."

Apart from the rather obvious instance of pointy-haired managers, this is wrong. John Von Neumann showed that an inanimate instrument does not collapse the quantum wave function of the impacting object but assimilates it, quantum superposition and all. There is no "wave function collapse," and hence no certain measurement, unless a conscious observer is watching. Hence Schroedinger's cat paradox. The transactional interpretation attempts to get round this by invoking a complicated "handshake" process, but is not widely accepted.

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