How something is measured is different than if something has a physical existence or not.
Nope .. measurement is the process by which a given model's attributes acquire their empirical values. Those values give meaning to the overall model, be it a tree or the coastline of England.
Ken-1122 said:
See
Model Dependent Realism (for the background):
While not rejecting the idea of "reality-as-it-is-in-itself", model-dependent realism suggests that we cannot know "reality-as-it-is-in-itself", but only an approximation of it provided by the intermediary of models. The view of models in model-dependent realism also is related to the instrumentalist approach to modern science, that a concept or theory should be evaluated by how effectively it explains and predicts phenomena, as opposed to how accurately it describes objective reality (a matter possibly impossible to establish).
So, a lot of what I'm saying in the physical existence and coastline example can be understood in a similar framework of the well-known truism
'the map is not the territory'. This truism is often used as a way of distinguishing
maps of reality, from
'reality itself', so it could be viewed as a confirmation of some kind of mind independent reality. But that's not actually a scientifically correct interpretation because it does not restrict to operational (testable) meanings. The scientifically accessible interpretation is that what we call a map is a different kind of concept (or model) than what we call a territory, but they are both quite demonstrably concepts, so they are actually just different kinds of maps.
So the truism, for a scientific thinker, should actually be 'what we call a territory is a different type of map, with different uses and testable justifications, than what we call a map'. After all, that is the only claim that science could ever test: whether or not the purposes we lay out for
our meaning of 'map' and 'territory' are suitably serving our needs.
It's as though some people think 'maps' (or coastlines) and 'territories' (or physical reality, or trees) are just handed to us, and our minds have no part in deciding what we want those words to mean!
Ken-1122 said:
IOW we all share the human perception of it, and the human perception is the only perception that matters.
We don't have direct access to anything other than our perceptions.
Ken-1122 said:
Do you know of a better definition of what is real?
I don't need dictionary definitions. The two respective
methods we use for establishing the meaning of 'reality' distinguish what we mean by that word, over any other (the two methods are: the scientific method and the belief method).
Distinctions are more
useful ... especially in science. See,
'reality' is just a word. It has a meaning like all other words have meanings. We give it our meaning. A scientific thinker gives it meanings from conclusions based on objective test results. Those meanings are contextual and provisional. A believer gives it meanings based on beliefs. Both methods require a human mind and they produce different kinds of meanings for 'reality'.
The meanings we give to 'reality' aren't floating around in some ethereal space somewhere like some kind of 'thing' (or object which 'truly exists, exteriorly') waiting for us to grab it.
The notion that 'exterior physical reality' is something independent from our minds, is a pure belief.
All of what I say here isn't just some opinion of mine, its the conclusion formed from an abundance of test results produced from an objectively testable hypothesis called the Mind, (or Model), Dependent Reality Hypothesis.
Ken-1122 said:
Do you share my belief that people have knowledge concerning the physical world that is not subject to the human mind? If not, do you really believe something like gravity is actually subject to the human mind?
What I might happen to believe, or not believe,
is completely irrelevant to how science gives its gravity model its meaning in science's objective reality, (or your so-called 'physical world').
I could believe in say, Druidism, and this would make
precisely no difference whatsoever.