The real issue is that, as far as any can tell, there is no why. Teleology is nothing but human arrogance. We are so infatuated with our ability to act that we assume everything that happens must be caused by will. The fact of the matter is that no human being has access to the "why"; anyone who tells you they know, or has any idea beyond pure self-congratulating invention, is either lying or deluded.Are you speaking ex cathedra there, Pope Guilty?
"That has profound implications. For example, what we experience as something being solid to the touch is a function of patterns of electromagnetic interference at the subatomic level; no actual physical contact, in the way we normally understand it, takes place when we touch a hard surface. Nothing is "solid" in any absolute sense."I don't think this is profound at all & this sort of thinking is related to the mind/body problem. "Physical contact" is what it is, it's the same shit it's been for thousands of years. There is "actual physical contact" in exactly the way we normally understand it. It turns out that we simply didn't "normally understand" what happens in the world at nano scales.
"Reality itself is a thinking thing, and the object of its own
thinking." - Parmenides
Why shouldn't we be able to map the brain (at whatever level of grainyness that is necessary: axon, molecular, atomic, quark, whatever) and simulate it on a powerful enough computer?It's hard to know where to start with this. I guess I'll assume this is not a rhetorical question. In which case it occurs to me to wonder why I need to answer a question when you are the one making an assertion (whatever it is, exactly, you're asserting). Doesn't your extraordinary claim require proof? Also, this question reveals that you really don't know anything about how the human mind works, not even the level of abstraction that is necessary and sufficient for formulating a specification of it. If you don't even know that, why should I find you credible on any aspect of the problem?
You have to imagine that there is somethingI don't know whether there is something special about the brain. But I'm pretty sure there's something special about the human mind. For one thing, it's unique. No other animal can do what we're doing right now. SETI has been scanning the skies for forty years or so, and no other evidence of any other intelligent species has been found. (With the possible exception of the Wow! signal, which has never been replicated.) No (existing man-made) machine can do what we're doing right now. Back in the '70s, Marvin Minsky and his merry band of GOFAIers was telling us that human-level AI was right around the corner. A lot of very smart people worked very hard on it. And then the AI winter fell. Two decades later, still no joy.magicspecial about the brain to think that it is impossible to copy and simulate.
Assuming the mind is software I see no problem at all copying it to a virtual brain running on hardware radically different from that we evolved. I hope to do that with my own mind one day. Whether we'll develop the technology to implement that kind of thing within my lifetime is, of course, open to debate. I hope so, but I rather doubt it. I do, however, think that unless humans kill themselves (or ruin our technological society) the technology will be developed at some point in the future. To think otherwise is to believe that there is something magic about the brain.I've been trying to figure out whether you had any basis other than ideology, dogma, faith—in other words, any scientific basis for those statements. As far as I can tell, you don't.
Obviously simply knowing how the mind works does not automatically lead to copying or any other useful technology. But I do explicitly and axiomatically reject the idea that we simply cannot learn what makes the mind work.I believe that you don't understand something unless you can replicate it (or describe in a rigorous manner how to replicate it). So I think that if we truly knew how the mind works (with no "...and then a miracle occurs" clauses), replicating it would become an engineering problem.
We haven't build AI, but frankly the early pioneers were insanely optimistic. Not even the biggest and most powerful super computers today match the even a dog brain's complexity. The human brain contains around 100 billion neurons, and each neuron is connected to thousands of others. That's a rather staggering degree of complexity. Still, if Moore's Law continues to hold up we'll be manufacturing chips with about that level of complexity around 2045.You're treating this as an engineering problem. But it's not (or not only) an engineering problem. We don't have the slightest idea how the mind works. I'm familiar with Moravec's calculations of how much computing power would be required to replicate human intelligence. It's all predicated on the assumption that the neurons are doing what he thinks they're doing. But nobody knows that for sure. It's speculation. Fun, thought-provoking speculation, but, in the end, just speculation.
You appear, and please correct me if I'm wrong, to be working on the assumption that because we are the only sentient species is us, that somehow there *IS* something truly special, unique, and non-reproducible, about the human mind. I don't see how that follows at all.Let me just make it clear that I'm not trying to make any positive arguments here. I'm just trying to cast doubt on your arguments.
But the over optimism of the early thinkers on the subject of AI hardly seems like a reason to toss the entire idea out the window. Early thinkers on the subject of space travel were also incredibly overly optimistic, but we did achieve useful space travel, yes?Space travel is different. We had just about all the science necessary to do it before we started trying. That really was just an engineering problem.
The word "tov" would best be translated with the word "functional". When looked at his handiwork he did not see that it was "good", he saw that it was functional, kind of like a well oiled and tuned machine.I would argue that this implies not a moral valence to the word, but rather a pragmatic one. This doesn't sound to me like an attempt to argue the "why" of the world. I think the argument for religion attempting to explain why things are the way they are is really more in the moral realm than the physical.
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I think that sums it up right there. First Freud, and now this.
posted by ewkpates at 3:52 AM on October 30, 2008 [10 favorites]