@failures art,
Thankyou. Excellent answer.
Quote:If a tree falls in the forest, and nobody is there, guess what? It makes a sound. Do you know why? Because sound itself is a physical thing
But the type of sound it makes depends very much on the perceptive range of the creature hearing it, and the distance the creature is from the tree when it falls. There is no 'absolute sound', that is, a sound that is the same for all creatures and all viewpoints. There is always only the sound perceived from some viewpoint.
This is not sophistry, and it is also not science. It is an observation about the indispensability of the observer. As Kant demonstrated, we have no knowledge of the universe as it exists 'in itself'. Even Wikipedia's definition of 'objectivity' notes that
Quote: most recent philosophers, since the Critique of Pure Reason by Immanuel Kant, have concluded that scientific knowledge is systematic knowledge of the nature of existing things as we perceive them, rather than as they are in themselves.
All this is saying is that objectivity is absolute, and the reality of the perceived universe is conditional.
As for the undermining of the notion of objectivity by QM, and peer-reviewed articles on it, have a look at
The Quantum Theory and Reality by Bernard D'espagnet, Scientific American, November 1979, which opens with the statement that 'the doctrine that the world is made up of objects whose existence is independent of human consciousness turns out to be in conflict with quantum mechanics and with the facts established by experiment.'
Now this does not mean that the universe 'exists in my mind'. The conception of 'my mind' is also something that exists in consciousness. Consciousness in this formulation is not one article of perception among others, but fundamental to the nature of reality.
A handy way of conceptualising it is reality is not what you see when you look out the window. Reality is you looking out the window; because this perspective includes the observer.