There is no common sense about consciousness

If a tree falls in a forest...

Theories of consciousness like dualism and panpsychism often assume that conscious experiences involve acquaintance with mental qualities – qualities wholly internal to the mind. These qualities are supposed to be totally obvious to anyone who introspects, and so part of our “common sense” picture of the mind. Yet, argues Justin Sytsma, people who are untrained in analytic philosophy don’t find these qualities obvious at all. Philosophers of consciousness should therefore beware of making assertions about “common sense” in their arguments, for “common sense” turns out to be a shifting ground, even when the topic is our own mental life.

 

“In attempting to explode the myth I shall probably be taken to be denying well-known facts about the mental life of human beings, and my plea that I aim at doing nothing more than rectify the logic of mental-conduct concepts will probably be disallowed as mere subterfuge.”
(Gilbert Ryle, The Concept of Mind, 1949/2009, p. 6)

 

You’ve probably heard the following thought experiment before: If a tree falls in the woods and no one is there to hear it, does it make a sound? Indeed, this question now borders on a cliché. Nonetheless, thinking about it can offer a nice entry point into understanding a particular notion of consciousness that has played a central role in contemporary philosophy of mind. This is the notion of phenomenal consciousness. More on this in a minute.

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Can there be unheard sounds or, similarly, unseen colors, unfelt pains, and so on?

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So, does the tree falling make a sound or not? (Or, more generally, can there be unheard sounds or, similarly, unseen colors, unfelt pains, and so on?) Let’s set aside complications, such as that the wildlife in the forest might hear it, even if no humans are around. As such, imagine that the falling of the tree goes completely unheard.

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It's becoming clear that with all the brain and consciousness theories out there, the proof will be in the pudding. By this I mean, can any particular theory be used to create a human adult level conscious machine. My bet is on the late Gerald Edelman's Extended Theory of Neuronal Group Selection. The lead group in robotics based on this theory is the Neurorobotics Lab at UC at Irvine. Dr. Edelman distinguished between primary consciousness, which came first in evolution, and that humans share with other conscious animals, and higher order consciousness, which came to only humans with the acquisition of language. A machine with only primary consciousness will probably have to come first.

What I find special about the TNGS is the Darwin series of automata created at the Neurosciences Institute by Dr. Edelman and his colleagues in the 1990's and 2000's. These machines perform in the real world, not in a restricted simulated world, and display convincing physical behavior indicative of higher psychological functions necessary for consciousness, such as perceptual categorization, memory, and learning. They are based on realistic models of the parts of the biological brain that the theory claims subserve these functions. The extended TNGS allows for the emergence of consciousness based only on further evolutionary development of the brain areas responsible for these functions, in a parsimonious way. No other research I've encountered is anywhere near as convincing.

I post because on almost every video and article about the brain and consciousness that I encounter, the attitude seems to be that we still know next to nothing about how the brain and consciousness work; that there's lots of data but no unifying theory. I believe the extended TNGS is that theory. My motivation is to keep that theory in front of the public. And obviously, I consider it the route to a truly conscious machine, primary and higher-order.

My advice to people who want to create a conscious machine is to seriously ground themselves in the extended TNGS and the Darwin automata first, and proceed from there, by applying to Jeff Krichmar's lab at UC Irvine, possibly. Dr. Edelman's roadmap to a conscious machine can be found at Jeff Krichmar's UCI website. IAI won't let me post a link.