[egjerlow]

I don't claim to be special - what I'm describing goes for all conscious beings, after all (and it could very well be that there are conscious animals). It seems to me you are trying really hard to make it seem like I'm uncomfortable on a personal or emotional level with the concept that consciousness can arise from matter only; please belive me when I say I am not. But on an intellectual and rational level I find the idea untenable. I don't understand why this is so hard to accept for you?

Your argument about the complexity of computers would have weight if I had been claiming that the reason consciousness cannot be found outside humans is because nothing can be as complex as the human brain; I am not claiming that. Hence you can make computers as complex as you want - you still haven't answered how subjective experience can arise from matter.

There is nothing about me in particular that is special, but every conscious being does possess a quality or is inhabited by a phenomenon that is unlike anything else in the universe that we know of. That makes it pretty damn special, yes.

But again, it's not the feeling of feeling special that I am talking about here. It is the phenomenon of subjective experience.

[acqq]

> It seems to me you are trying really hard to make it seem like I'm uncomfortable on a personal or emotional level with the concept that consciousness can arise from matter only; please belive me when I say I am not. But on an intellectual and rational level I find the idea untenable. I don't understand why this is so hard to accept for you?

Thanks for trying to explain your belief to me. If we concentrate on exactly your last post, maybe you can understand how I see it: I see again that you claim that you came to that conclusion "intellectually and rationally" but everything else contradicts that. I see the claim to uniqueness of conscious beings (and I still haven't heard from you if you consider only humans "conscious") as a "the phenomenon of subjective experience." That is, because you "subjectively experience" it, that means to me "not rationally" and I still conclude it's your "feeling of being special."

If you would really approach your claims "intellectually and rationally" you'd understand that that "subjective experience" which you see as something special is an emerging property. And the emerging properties are seldom "intuitive" and all appear to us "unlike anything else in the universe" until we simply use enough computation to reproduce them.

If you are aware of the history of human understanding of the movements of planets you would know that even these simple paths were before seen "unlike anything else in the universe": we didn't know how anything can continue to move so, and before Galileo we didn't even know that anything could not circle the Earth -- note the Earth being completely "special" in that understanding. Then, only better measurements helped us see the truth: Galileo discovering moons circling around other planets (making our Moon not special) and proving that the circular motion around other planets exists. Tycho Brache more accurately measuring the movements of the planets, and Kepler recognizing that all the paths can be seen as ellipsoid once we accept Earth's non-uniqueness, but that it actually moves around the Sun. Note: only to come to that conclusion, Kepler needed the huge amount of precise measurements that nobody before him had! And he had to perform for that time immense number of calculations, something that was certainly out of reach to 99.9999999999% (I'm not sure about the number of nines) of the human population at that moment, especially out of reach even to those who were rich enough and knowledgeable enough to perform them, but who would still not be even willing to spend so much time of their life on that topic unless they were ready to accept that the Earth doesn't have to be special in being a center of the universe.

And finally, even after that unique amount of measurements and calculations, it was still not answerable to anybody what is moving the planets in that ellipsoid paths, that is how anything like that can "arise" from anything we "subjectively knew." That is, anybody could claim exactly what you claim now.

But then came Newton, being lucky to invent a new way to speed up the calculations: the infinitesimal calculus. It was effectively a new "language" that allowed immensely more concise description of the calculations involved, which allowed him to being able to describe the movements of the planets and moons as, up until then completely different from anything anybody "subjectively knew", the continuous free fall toward the object around which they rotate.

Note: unless you studied physics, you most probably don't even know that the planets are really continuously in the "free fall" or even that exactly that is the reason why the humans, being inside of the International Space Station orbiting only 250 mi above the Earth, still can "float" inside of it. The gravitational forces are quite strong only 250 mi above the Earth, but the cause of the stuff and humans floating is their "continuous free fall"! Both the emerging properties of a single simple law.

So was that anything of "subjective experience" before first human was in orbit? Either no, or yes, but proving the opposite, depending whom you'd ask. Is it today? Yes. It it "rationally obvious" even today? Actually no, unless you are definitely able to do the computations following the physics formulas, note, that capability is important to be able to be "rational" about that. Was it possible to calculate it 300 years ago? Yes, but made easier due to the "shortcut" of the infinitesimal calculus. What is that actually? An "emerging property" of just a simple law F = G m1 x m2 / r^2

Do all computations have some nice shortcuts? Depends, but for some emerging properties you actually have to perform all the steps! Take a Jula fractal: f(z) = z^2 + c is the whole formula, and we needed so fast computers like today's to produce this (emerging properties of calculating the formula):

https://www.youtube.com/watch?v=5rMyDWoTArU

or (Mandelbrot, also the same formula):

https://www.youtube.com/watch?v=jrtGOMKrask

Please watch it, to get an idea how much can emerge from something as simple as f(z) = z^2 + c The computations needed for video are immense, we're just at the moment that we have strong enough computers to do them, record the output and speed it up enough for you to watch it in only 10 minutes. Just 100 years ago nobody would have been able to produce that output in any form.

Note: before Newton, nobody could believe it is so simple: that all the complex (and they are complex) planetary motions are an emerging property of such a simple law.

Likewise, your "subjective experience" of being special being "conscious" is an emerging property. The underlying completely materialistic laws are simple, but simply a lot of computation is needed for the property to emerge, if you want to reproduce it with our current technology.

The nature reproduces it, of course, all the time, having much smaller "building blocks", and there is a physicist who wrote:

http://www.preposterousuniverse.com/blog/2010/09/29/seriousl...

"Seriously, The Laws Underlying The Physics of Everyday Life Really Are Completely Understood"

And he also wrote a whole book on the topic:

https://www.preposterousuniverse.com/bigpicture/

[egjerlow]

>Thanks for trying to explain your belief to me. If we concentrate on exactly your last post, maybe you can understand how I see it: I see again that you claim that you came to that conclusion "intellectually and rationally" but everything else contradicts that. I see the claim to uniqueness of conscious beings (and I still haven't heard from you if you consider only humans "conscious") as a "the phenomenon of subjective experience." That is, because you "subjectively experience" it, that means to me "not rationally" and I still conclude it's your "feeling of being special."

I think we already here have some deep reasons for disagreement: If I understand you correctly here, you're saying that no conclusion reached on 'subjective' grounds can be rational - maybe you would even go so far as to say that what is rational is identical to knowledge gained via the scientific method? If so, I would disagree with your definition of what is rational.

(I don't know whether animals are conscious in the same way we are - I would have no problems either way. As I said, it's not about humans (or myself) being special, it is that the phenomenon of consciousness is special).

> If you would really approach your claims "intellectually and rationally" you'd understand that that "subjective experience" which you see as something special is an emerging property.

This is a really bold claim, and it is indeed the locus of our disagreement, so again I'd have to say I disagree :) Emergence is not a magic wand you can wave and make every problem go away; for all phenomena where 'emergence' have been invoked as an explanation, we are really just talking about very complex phenomena that are very very hard to reduce to their base 'constituents' (elementary particles and their force transmitters), but which we can at least imagine can be reduced to these constituent parts - in other words, I can imagine starting from some basic building blocks of matter and, through some very complex patterns of organization, I can imagine moving from that starting point to the end result - conceptually, even if I cannot trace all the steps with my current understanding.

But this is not something I can imagine with the phenomenon of subjective experience. (An aside here: It seems you take me to say that 'because of my subjective experience that I cannot imagine this, this cannot be true' - what I am saying is that it is subjective experience itself that is what we're trying to explain here. So referring to earlier people not 'subjectively experiencing' an understanding of how e.g. planets can move is not really on target: My concern here is with the phenomenon of subjective experience itself).

What I mean is that in order to explain, say, my subjective experience of how an apple tastes, it's not just a matter of saying 'well, now your neurons are firing in this way and we know this is the taste center of your brain, so that's why you have a sensation of taste'. That is showing a correlation. What I'm saying is that this is not an explanation, and to me it shows that it will be impossible to move from a purely materialistic account of this experience to my actual subjective experience of the thing. How can we ever translate the firing of the neurons in my brain into the subjective world my consciousness inhabits? How can atoms, no matter how sophisticately arranged, give rise to this type of phenomenon?

Let me try to say it in another way: You could measure the activity of the brain and give an 'objective' account of what happens to a person: Now they're angry, now they're cold, now they're slightly hungry, etc. But it stops there! How will you move from this objective description to the actual experience of these feelings and states of mind?

Sean Carroll is a great physicist, and it's great that he engages with these questions, but he is mainly a physicist, not a philosopher of mind, and he does exhibit the same hubris that many of our ilk (yes, I'm a physicist too) have when it comes to other fields. The question I'm raising here is far from being unanimously agreed upon, and when Carroll writes stuff like "To persuade anyone otherwise, you would have to point to something the brain does that is in apparent conflict with the Standard Model or general relativity.", it's either disingenous or just a bit lazy. Giving a materialistic account of consciousness is non-trivial no matter whether the brain violates SM or GR or not, and whether it does or not will have little bearing on this problem.

If you're interested in reading more, and indeed seeing that I'm not the only one who sees this as a big problem of a materialistic account of the universe, here is a book I can recommend: https://www.amazon.com/gp/product/1851683763