Ignoring BAA (as he deserves given his post), I think you probably posted drunk here.andrewclunn wrote:I have to agree with born-again-atheist on this point. The error there is in the human taxonomy and labeling of language, not in the 'rock' itself. For example, there's nothing particularly baffling about the duckbill platypus under the cladistic model of life (which categorizes species based on ancestry.) It's only because of the artificial notion of 'mammal' or 'bird' that people think that there is something odd about the animal. You are suggesting that words are not a reflection of reality, but instead it is the other way around. Well the moment prayer or any other form of wishful thinking proves to be able to manipulate the universe outside of human minds, I'll concede defeat, but that's never going to happen because that tree does make a noise regardless of whether I'm there to hear it or not, and you can't deny that without denying the very existence of physics.To return to discussion - a rock is not a rock independent of our view to my way of thinking. Imagine for example a loose collection of material in zero gravity with only 30% the density of rock as we know it on earth. Is that a rock? When does it become one? When it has 50% the density? 90%? It is human definition and consciousness that brings form to the thing.

The tree causes an 'effect' when it falls. It only becomes sound when and if there is an ear to interpret the phenomena that the fall of the tree caused, i.e. the airwaves caused by the impact of the material on the ground etc. . Thus the presence of consciousness and perception is essential for the event not to simply be a multiple, really complex set of circumstances and micro-events which include time, energy, the history of the tree, the detail of every movement and change in the tree as it collapses and so on.
The presence of humans seems to be essential for such events and for all material phenomenon, to take on the crystallised nature that our common sense view of the world seems to demand.
I guess I am the ultimate relativist here. But think about it. Every time someone has taken what you might call a Newtonian mechanical view about natural phenomenon, someone else has shown how much of a shadow puppet reality we truly inhabit.