The question raised here about substrate is important;
GrahamH wrote:
Is a substrate required? We only know of 'information processing' that occurs on a physical substrate. The substrate seems to posses 'processing', or 'interaction'. Is it implementing math, as I think you are suggesting, or is math and 'computing' mimicking the nature of the substrate, on the substrate?
If this universe is a computation it does not necessarily follow that reality is computation. This universe might be a computation performed on some 'real substrate', analogous to a physical computer generating a virtual world. (See Bostrom).
I think FuwF has said earlier that this is the foundational question, if the answer is yes the whole shebang falls down.
I would say the answer to that important question it is no, based on the opinion I hold that the physical can not be demonstrated to exist other than in a mental experience. We simply can not be sure of its independent existence, since we can never experience the physical other than via our own mind.
If we assume the physical exists independent of the observing mind, then there is a question to answer here, if however we consider that the physical is a product of the mind, then there is absolutly no need to think the physical could be a pre-requisite for information or data - the physical is itself a product of the minds construction of (mental) data in my model.
The question that I would propose is not is there a 'physical substrate' so much as is the data mental. In my model, the data is (obviously) mental, because 'its all mental' the question I would like FuwF and SoS to consider; is it possible, probable or impossible that the data we are discussing in the 'its all data' model is mental data.
I expect SoS to answer 'no' based on his mind-phobia
Due to my pro-mental bias, I think the whole 'data model' sounds like an expression of the same kind of concepts, the good thing being it is derived from modern understanding and theories, not the ancients, and is therefore less likely to be called 'woo'.
An advanced intellect can consider fairly the merits of an idea when the idea is not its own.
An advanced personality considers the ego to be an ugly thing, and none more so that its own.
An advanced mind grows satiated with experience and starts to wonder 'why?'