Yet the question remains: what is "observation"? In my own model of quantum measurements I have stated that "Nature observes herself". We do not need human observers, a detector is enough. Which solves the problem, but only to a certain extent. Because we then can enquire: What is this "detector"? It is a devise that has been identified and used as a "detector". Some intelligence is needed to notice that something "happened", that some information about something else has been provided. And some intelligence was needed to "construct" a detector and to use it in a meaningful way, not as a hammer. We need to know what "meaning" is, first of all. Back to "information".
A few thoughts, for what they're worth. I like "nature observes herself." If a
human observer is not necessary - only a detector - then perhaps all detectors are also observers? Whatever consciousness is, every 'thing' has some. An atom has a very limited but real degree of consciousness. A human has a
less limited degree of it. What is consciousness? It has something to do with the ability to receive, process, store, and transmit information. This information is somehow incorporated into the thing itself - it registers the information transfer, like data about position and heat, responds accordingly (or not), and is changed in the process. Perhaps consciousness has something to do with the degree and complexity of an 'observer's' ability to process, receive, or contain information?
And what is information? It seems to be the word we use to describe possibilities and how they are actualized. For example,
this particle (and not those other ones) is
here (and not all those other possible places). When it changes position, nature observes, i.e. all other particles register its new position, and are thus informed by it. They are not simply "all those other particles", but "all those other particles
in relation to this specific particle, and each other." Or, I am this shape, not all those other possible shapes. I have these experiences, these things I've learned, this history, and not all other possible ones. Or, this statement about things is true, not all those other possible but false statements. That is still very fuzzy, though.
Some relevant Cs quotes:
12/29/2018:
A: ... This occurs because even inanimate matter has a minimal level of matching consciousness.
8/15/2020:
(Pierre) Would you say then that the information field contains already ALL possible information?
A: Yes
5/29/2021:
Q: (Ark) ... Where consciousness is located?
A: Where is it not?
...
Q: (Ark) Consciousness is related to information. What really happens when things happen is that information is recorded. Where is information recorded?
A: By consciousness. [laughter] Information recorded equals time.
...
(L) So consciousness is the medium in which information resides.
So consciousness - whether that of a particle, a human, or God (unified, universal mind, which contains all information - all possibilities) - is the 'information receiver/processor/storage/transmitter' of all the information it is able to handle. Each observer is a source of information for others, and a receiver, and each observer is informed by the information they receive, and the possibilities they actualize.