173 karma · joined October 18, 2013
I say that because of that's what I best understand the neocortex doing (it does that and probably something more). If you buy in what the Numenta people are talking about, then certain neurons in your neocortex configure themselves to be able to predict their inputs better, so they start to form a model of their input. In aggregate, these neurons probably start to learn multiple sequential models of their input.
My guess it that these models in the brain interact with each other. I think some of the larger models that the brain models is us (individually), the environment we find ourselves in, our mind, how we relate to it, the 3D space that we find ourselves in, and such.
This is a simulation to explain what is going on "out there" (the physical world) so that the physical organism can successfully navigate "out there".
This simulated world, body, and such, is what is "real" to us.
You can at least scientifically model and test this.
I think it's much more likely that consciousness is a result of brain activity. For example, if consciousness creates the brain and the whole universe, why don't I have any reliable access to what is going on except partially in my immediate vicinity? Also, how can it create such a wonderfully consistent world out there and I can not reliably drive to store because my mind is preoccupied and the rest of me goes on autopilot.
I think you would require fewer bits to explain it the other way around.
To me, embodiment such and such seems pseudoscientific. How is it possible at this point in time that anything inside your pinky toe might be influencing the activity of your brain without sending nerve signals to the brain or secreting something into its surrounding which might eventually signal the brain? By some spooky magic?
From what I can best tell, consciousness is a property or a set of simulated properties, I don't really know what it is and I guess we won't have good answers for it until we will be able to properly simulate something like a brain and have better brain theories to explain it.
But the world you find yourself is a simulation, and your body is simulated. Everything you consciously experience is simulated. This simulation is running inside your brain. Part of your brain is trying to explain its input so it makes models to predict its inputs. I think it learns a model of your body, and your mind, and how these thing relate to each other and how they relate to what you experience "out there".
> I love to think about stuff like this, but are those questions even answerable?
Yes. (I think so)
But parts of your body might be sending pain signals into the brain for which there are no automatic actions for, e.g. you are in a sauna and it's too much.
The state of the simulation that you are in is updated with this pain signal. So, now, you might experience discomfort in the sauna and it is repellent so you might want to construct an action plan to move away from the source that is causing the pain (the fact you're in a sauna). But you might want to resist that for a moment and ignore the pain, maybe you have another conflicting goal which is to try to stay longer in the sauna than you're used to. Eventually the discomfort and pain might become overwhelming so you move out of the sauna.
Sometimes I think people have some intuitive sense of how things ought to work but but they can't reconcile it with physics description of the world. For example, how is it possible that a physical system such as a brain can have experiences, such as colors, love, objects, music, etc.
I think the simplest answer to that conundrum is that, yes, physical systems can not have these sorts of experiences, they do not follow from the theories or descriptions. But what you can do instead is simulate a world with such magical qualities. This is what I think some parts of the brain do, is to simulate the world that we personally find ourselves in.
Then the real question is how does the brain do that? How does it work? What are its learning rules? What does it end up learning?
My guess is that it ends up describing this universe (including ourselves) that we find ourselves in.
Why? You could imagine that the signals coming into the brain from the rest of the body are just a bit array that is changing all the time. What does it mean? That's for the brain to find out, so it's always in the process of making and updating predictive models of its input. Why? So that the biological robot that you are in control of navigate successfully in the physical world and meet the needs of the organism, e.g. eat food, drink water, keep itself in the right temperature, keep itself from being harmed, and such.
The way I understand it as the blood pressure drops your brain stops to function properly but it might still somewhat function. As blood pressure goes back up more parts of the brain resume normal function but the "functional" state of the brain might still be abnormal. The current state is unstable, especially when new functionality starts to come back online and resume normal behavior, and the state of the brain quickly moves from a unstable state to a more stable normal state.
This can also be probed with science. If we know how the brain wires itself, what it is computing and representing then I think we'll find these patterns in the brain.
This is how I best understand these things. I can also go into more detail how I came to think about this this way and how I got to this point.
With meditation you can learn for example how to turn off your simulated self. With certain psychoactive substances you alter the dynamics of your physical brain which causes it to simulate a somewhat different universe.