On 24/04/2017 7:31 pm, Bruno Marchal wrote:
On 24 Apr 2017, at 01:11, Bruce Kellett wrote:
We an easily obtain intersubjective agreement about the existence of
an external physical world. You seem to want 'direct' experience, and
refuse to admit the possibility of evaluating the experienced
evidence to reach some conclusion.
Not at all. We can infer laws from observation, and accept observation
can refute a theory. It is even, before computationalism, the main
reason why I do not believe in a primary physical universe: the
absence of evidences for it.
I was talking about the existence of an objective external physical
world. I said nothing about "primary matter", the question as to whether
matter -- in the form of quarks and electrons, etc. -- is primary, or
emergent from something more fundamental, still a matter of active research.
You say there is no evidence for a primary physical universe, but my
claim is that there is ample evidence for the existence of a physical
universe.
On the other hand, there is absolutely no concrete evidence for the
truth of computationalism. In fact, it fails the most elementary tests
because it cannot explain even the most basic features of the physical
universe. It does not "explain" consciousness, it merely describes it as
supervening on computations.
Bruce
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