{"id":1739,"date":"2022-06-15T12:19:41","date_gmt":"2022-06-15T11:19:41","guid":{"rendered":"https:\/\/generic.wordpress.soton.ac.uk\/skywritings\/?p=1739"},"modified":"2022-06-15T12:19:41","modified_gmt":"2022-06-15T11:19:41","slug":"chatbots-and-melbots","status":"publish","type":"post","link":"https:\/\/generic.wordpress.soton.ac.uk\/skywritings\/2022\/06\/15\/chatbots-and-melbots\/","title":{"rendered":" Chatbots and Melbots"},"content":{"rendered":"\n

Something similar to LaMDA<\/a><\/strong> can be done with music: swallow all of online music space (both scores and digital recordings) and then spew out more of what sounds like Bernstein or (so far mediocre) Bach \u2013 but, eventually, who knows? These projections from combinatorics have more scope with music (which, unlike language, really just\u00a0is<\/em>\u00a0acoustic patterns based on recombinations plus some correlations with human vocal expressive affect patterns, whereas words have not just forms but meanings).<\/p>\n\n\n\n

Vocal mimicry includes also the mimicry of the acoustic patterns of the vocal expression of affect<\/em>: anger, fear, sadness, hope. Dynamics, tempo, articulation, even its harmonic features. But these are affects (feelings), not thoughts. Feeling cold is not the same as thinking \u201cI am cold,\u201d which, miraculously, can be expressed by that verbal proposition that states what I am feeling. And language can state anything: \u201cThe cat is on the mat.\u201d The words cat<\/em>, mat<\/em>, and on <\/em>\u2013 all have referents, things and states in the worlds they refer to; and we all know, from our sensorimotor experience, what they are. \u201cMeow\u201d imitates the sound a cat makes, but it does not refer to it the way referring words do. And a sentence is not just a series of referring words. It is a proposition<\/em>, describing something. As such it also has a truth-value: If the cat is really on the mat, then \u201cthe cat is on the mat\u201d is TRUE; otherwise FALSE. None of that is true of music (except of course in song, when the musical and the propositional are combined). <\/p>\n\n\n\n

The notion of \u201ctransmitting thought\u201d is a bit ambiguous. I transmit thought if I am thinking that the cat is on the mat, and then I say that the cat is on the mat. If instead of saying it, I mime it, like in charades, by imitating the appearance of the cat, maybe making meowing sounds, and gesturing the shape of a mat, and then its position, and then pantomiming a cat, lying on the space that I\u2019ve mimed as a mat\u2026 That would indeed transmit to another person the thought that the cat is on the mat. And sufficiently iconic and programmatic music can transmit that thought too, especially if augmented by dance (which is also pantomime). <\/p>\n\n\n\n

[[I think language originated with communication by gestural pantomime; then the gestures became more and more conventional and arbitrary rather than iconic, and that\u2019s also when the true\/false proposition was born. But once propositional gesturing began, the vocal\/auditory modality had huge practical advantages in propositional communication over the visual\/gestural one [just think of what they all are] and language (and its representation in the brain) migrated to the speech\/hearing areas where they are now.]]<\/p>\n\n\n\n

Yes, music can express affect, and it can even express thought (iconically). But not only is vocal\/acoustic imitation not the best of music, it need not be, for music can not only express affect (and mime some thought); it can also inspire and thereby accompany<\/em> thought in the listener in the way a pianist or orchestra can accompany (and inspire) a violinist or vocalist.<\/p>\n\n\n\n

But music is not propositional. It does not state<\/em> something which is true or false. You cannot take a composer of (instrumental) music (Lieder ohne Worte<\/em>) to court for having lied. (That\u2019s why the Soviet Union could only oppress Shostakovich, but could not prove he had said anything false or treasonous.) Language (and thought) has semantics, not just form, nor just resemblance in shape to something else: it has propositional content, true or false.<\/p>\n\n\n\n

It is true that it is much harder (perhaps impossible) to describe feelings in words, propositionally, than it is to express them, or imitate their expression iconically; but although it is true that it feels like something to think, and that every thought feels different, thinking is not just what it feels like<\/em> to think something, but what that thought means<\/em>, propositionally. One can induce the feeling of thinking that the cat is on the mat by miming it; but try doing that with the sentence that precedes this one. Or just about any other sentence. It is language that opened up the world of abstract thought (\u201ctruth,\u201d \u201cjustice,\u201d \u201cbeauty\u201d) and its transmission. Try to transmit the meaning of the preceding sentence in C# minor\u2026 Music can transmit affect (feeling). But try transmitting the meaning of this very sentence in C# minor<\/p>\n\n\n\n

Not all (felt) brain states are just feelings (even though all thoughts are felt too). Thoughts also have propositional content. Music cannot express that propositional content. (And much of this exchange has been propositional, and about propositional content, not affective, \u201cabout\u201d feeling. And, again, what it feels like to think a proposition is not all (or most) of what thinking is, or what a thought means. <\/p>\n\n\n\n

[[Although I don\u2019t find it particularly helpful, some philosophers have pointed out that just as content words are about their referents (cats, mats), thoughts are\u00a0about<\/em>\u00a0propositions. \u201cThe cat is on the mat\u201d is about the cat being on the mat \u2013 true, if the cat really is on the mat, false, if not. Just as a mat is what is in your mind when you refer to a mat, the cat being on a mat is what the proposition \u201cthe cat is on the mat\u201d is \u201cabout.\u201d This is the \u201caboutness\u201d that philosophers mean by their term \u201cintentionality\u201d: what your\u00a0intended meaning<\/em>\u00a0is, the one you \u201chave in mind\u201d when you say, and mean: \u201cthe cat is on the mat.\u201d None of this has any counterpart in music. What Beethoven had in mind with Eroica \u2013 and what he meant you to have in mind — was originally an admiration for Napolean\u2019s fight for freedom and democracy, and then he changed his mind, removed the dedication, and wanted you not to have that in mind, because he had realized it was untrue; but the symphony\u2019s form remained the same (as far as I know, he did not revise it). <\/p>\n\n\n\n

Shostakovich\u2019s symphonies share with poetry the affective property of irony. He could say a symphony was about Lenin\u2019s heroism, but could make it obvious to the sensitive listener that he meant the opposite (although in the 12th<\/sup>\u00a0symphony he revised it because he feared the irony in the original was too obvious; the result was not too successful\u2026). But poetry can be both literal \u2013 which means propositional \u2013 and figurative \u2013 which means metaphorical; more a representation or expression of a similarity (or a clash) in form than the verbal proposition in which it is expressed (\u201cmy love is a red, red rose\u201d). <\/p>\n\n\n\n

Music cannot express the literal proposition at all. And even the metaphor requires a vocal (hence verbal) text, which is then \u201caccompanied\u201d by the music, which may express or interpret the literal words affectively, as Bach does with his cantatas. Even Haydn\u2019s creation depends on the implicit \u201csub-titling\u201d provided by the biblical tale everyone knows. \u2013 But all of this is too abstract and strays from the original question of whether LaMDA feels, understands, intends or means anything at all\u2026]]<\/p>\n\n\n\n

I\u2019d say what LaMDA showed was that it is surprisingly easy to simulate and automate meaningful human thinking and speaking convincingly (once we have a gargantuan verbal database plus Deep Learning algorithms). We seem to be less perceptive of anomalies (our mind-reading skills are more gullible) there than in computer-generated music (so far), as well as in scores completed by lesser composers. But experts don\u2019t necessarily agree (as with authentic paintings vs. imitations, or even regarding the value of the original). Some things are obvious, but not all, or always. (Is the completion of the Mozart Requiem as unconvincing as the recent completion of Beethoven\u2019s 10th<\/sup>?)<\/p>\n\n\n\n

The \u201csymbol grounding problem\u201d — the problem that the symbols of computation as well as language are not connected to their referents — is not the same as the \u201chard\u201d problem of how organisms can feel<\/em>. Symbols are manipulated according to rules (algorithms) that apply to the symbols\u2019 arbitrary shapes, not their reference or meaning (if any).  They are only interpretable by us as having referents and meaning because our heads \u2013 and bodies \u2013 connect our symbols (words and descriptions) to their referents in the world through our sensorimotor capacities and experience.<\/p>\n\n\n\n

But the symbol grounding problem would be solved if we knew how to build a robot that could identify and manipulate the referents of its words out there in the real world, as we do, as well as describe and discuss and even alter the states of affairs in the world through propositions, as we do. According to the Turing Test, once a robot can do all that, indistinguishably from<\/em> any of us, to<\/em> any of us (lifelong, if need be, not just a 10-minute Loebner-Prize test for 10 minutes) then we have no better or worse grounds for denying or affirming that the TT robot feels than we have with our fellow human beings.<\/p>\n\n\n\n

So the symbol-grounding would be solved if it were possible to build a TT-passing robot, but the \u201chard\u201d problem would not. <\/p>\n\n\n\n

If it turned out that the TT simply cannot be successfully passed by a completely synthetic robot, then it may require a biorobot, with some, maybe most or all the biophysical and biochemical properties of biological organisms. Then<\/em> it really would be racism to deny that it feel and to deny it human rights. <\/p>\n\n\n\n

The tragedy is that there are already countless nonhuman organisms that do feel, and yet we treat them as if they didn\u2019t, or as if it didn\u2019t matter. That is a problem incomparably greater than the symbol-grounding problem, the other-minds problem, or the problem of whether LaMDA feels (it doesn\u2019t).<\/p>\n\n\n\n

(\u201cConscious\u201d is just a weasel-world for \u201csentient,\u201d which means, able to feel. And, no, it is not only humans who are sentient.)<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Something similar to LaMDA can be done with music: swallow all of online music space (both scores and digital recordings) and then spew out more of what sounds like Bernstein or (so far mediocre) Bach \u2013 but, eventually, who knows? These projections from combinatorics have more scope with music (which, unlike language, really just\u00a0is\u00a0acoustic patterns … <\/p>\n

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