Searle's Chinese Room thought experiment argues with great precision why (solely) symbol-manipulating systems don't (and will never) think. The process of cognition is deeply internal and most likely involves self-reflection, internal states, and a sense of "I-ness" which seems to be unique to mental things (unlike Searle, I'm a substance dualist so I'm admittedly a bit biased). Ergo, I'd say, at the very least, an intelligent & thinking process would need to (also) operate on non-symbolic things (which rules out computational systems), maybe on qualia, but there's probably other primitives as well.
Thanks, I appreciate you pointing this out. Given that's the case, it might not actually be possible to reconcile our two views and we can just agree to disagree. (I was a physicist for ten years, so it's challenging for me to inhabit a position that contends that thought and matter are non-overlapping magisteria.)
I guess one question I might ask you is: how do you think substance dualism will affect your expectations about AI going forward? For example, is there any specific, measurable thing that you expect a future AI system absolutely will not be able to do? Or do any such "forbidden" things have to fall into categories like "thought", "feeling", etc. — i.e., the magisterium of the "mental", as opposed to the "physical" — under substance dualism?
For what it's worth, Searle is a naturalist (so he thinks brains are "just" meaty machines) and he would also disagree with you.
> For example, is there any specific, measurable thing that you expect a future AI system absolutely will not be able to do?
Not sure how you'd measure this, but I think sentience is most likely unachievable by AIs (at least how we're building them now). This is not without controversy, as while Roger Penrose would agree with me, David Chalmers would not. I'm not actually sure when Chalmers pivoted on his stance (haven't read him much since undergrad) because he was a bit more hardline in the early 2000s[1].
I definitely disagree that Searle's conclusion in the Chinese room experiment applies to the kinds of AI systems we're building today.
I agree that nobody to my knowledge has figured out how to measure sentience, so I don't think that fits under the "measurable" heading. And this does suggest to me — because this was your hand-picked example — that your position as a substance dualist doesn't affect your concrete expectations about what AI systems will actually be able to do in the future. Is that right?
Unless you're trying to say that today's AI systems do anything but manipulate symbols (which is imo patently obvious), I'm not sure how you can make that argument.
I take issue with this; imo its output looks exactly like what a neural network being fed terrabytes and terrabytes of natural language then recombining it would look like. But either way, you're making the same mistake: looking at behavior and affirming the consequent (namely: it outputs smart-looking text, therefore it must be intelligent). But this is a mistake. Its behavior implies nothing about underlying processes.
Oh btw you must’ve missed the post in which it was told it was a Linux shell and it mostly worked as one. Complete with recursively calling into a pretend API version of itself. I’m not calling that intelligence, but I’m not calling it regurgitation either.
That view is called "behaviorism" and is not really taken particularly seriously exactly because it's not very useful in truly understanding what is happening under the hood (which, as a curious species, we deem important). It's like not caring how electromagnetism works because the behavior of "the positive side of this chunk of rock is attracted to the negative side" is good enough.
Why is that a mistake? What other means do we have of assessing intelligence?
I think you need to move beyond Searle because he isn’t right.
I did a philosophy degree and smart people still very much take him seriously. If not him, take a look at Nagel or Chalmers. I think that his idea† that conscious experience is non-computable is probably right, especially given findings in the early 20th century that many things that we thought may have been computable ended up not being computable.v
† Not exactly his idea, though it nicely segueys into it.
I agree that some people take him seriously. Many people take religion seriously too. I don't take either him or religion seriously as true, but I do understand both his and religion's appeals.
That said, I do give a decent chance to aspects of the brain's problem solving ability having quantum properties and thus can not be calculated as efficiently on classical computers. We do not know this for sure, but evolution is incredibly inventive at finding efficient solutions. Still computable though, even on classical computers.
So, really, all that this tells you is that many people have this assumption.
Machine learning is modeled at least in small part in a way that it's thought the brain operates. I expect such things to be able to mimic human reasoning and intelligence, I just deny that there's any consciousness behind it -- there's no qualia, no phenomenology. In short, there's nothing that it's like to be ChatGPT. Even so, ChatGPT is able to mimic human intelligence, and I won't be surprised if (when?) it gets even better.
If you can't think of such a test, then it seems strange indeed to confidently claim that ChatGPT has failed to satisfy an untestable condition.
But if you can think of such a test, and any human fails it — does that mean the human who fails it isn't intelligent?