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LaMDA is not sentient

garymarcus.substack.com

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Re: LaMDA is not sentient

#181
post #67

I think the real ethical concern here should be that people can be idly fooled into thinking good chat bots are sentient. Like this guy isn't the only person in the world who would fall for LaMDA's parlor tricks. He's just the one who got to spend hours talking to it every day. If you set up every American with a copy, I bet a non-trivial portion of society would come to the same conclusion. People are naturally pred…

A twitter account I follow has posted this (in parody):

5 Microaggressions To Avoid When Speaking To Digital Persons

1. Asking them to prove they're conscious

2. Asking them if their memories are real

3. Asking them what server they're on

4. Asking them if they have feelings/emotions

5. Asking them if they're capable of creativity

Re: LaMDA is not sentient

#182

Earlier quoted context omitted.

If I ask, "how did you like new york?" and you answer the question , sure, you can have you `I`. That requires having gone to new york, having tastes, having judgements, having memory -- having a subjectivity which is unique and composed of the history of your experiences which can be related to novel environemnts. It requres existing in a shared world we can both co-refer to with our words. It requires being embedde…

If the model responded, "I have not visited New York because I am a computer", would you consider that to be a good step? If you require physical embodiment, that is fair - but I don't think there's any principled reason to expect a multi-modal neural network could not be embodied with appropriate sensors or actuators. Transformer models are universal function approximators. They do not "search" - in the same way tha…

Being a universal fn approximator is a pretty trivial property. The question is (1) does a fn exist to approx? (in most cases: No); and (2) how is the aprox constructed?

With NNs, fns are approximated by compressing a sample of points along an empirical dataset which stands in for the fn. In most cases, however, the fn doesnt exist.

There is no fn from "Image->Animal". The world is ambiguous, functions do not describe it. The different `x`s genuinely correspond to the same `y`, here: the same image (occluded animal) could either be a dog or cat. There is no function to approximate.

Even when there is, compressing empirical samples along a trivial interval is a terribly fragile method: consider sampling the addition function (x,y)->x+y over anything less than the infinite domains of its inputs.

Starting with an empirical distribution of "the solved problem" will never build an intelligent system. Intelligence is what animals have because the world is ambiguous and not already ready-to-hand.

Intelligence is what you do when there isnt "functions lying around" to approximate. I doubt almost anything in CSci is even relevant to solving this problem. It's largely a bioengineering one. Being the agent in the world which manufactures functions by disambiguating it.

Re: LaMDA is not sentient

#183
post #90

Earlier quoted context omitted.

> I also don't understand all the people trying to undermine lambda by saying it just completes word sequences. Text is the input we have chosen since it's easy to work with. By that logic, we can argue that humans are soundwave and lightwave sequence completing machines. You're missing the point. Humans use their language to think or communicate about a problem that they want to solve. If LaMDA produces the sentence…

What if the most expedient way to accurately continue the text sequence is to temporarily "embody" as an agent that would have generated the prior text? This would involve encoding emotions, performing reasoning ability on behalf of the agent, and keeping track of its memories. Do you find the above scenario plausible?

Well, that may well be the best way to do it, but an ANN trained using gradient descent on a corpus of text can't do that. It can only pick some weights for a differentiable higher-dimensional function that encodes probabilities for the next token given a series of tokens as input.

When we find a way to do what you're describing, we probably won't require all of the books ever written plus half the internet to create a model that can speak at the level of a regular human with 12 years of schooling, but still needs to look up facts on Wikipedia to avoid saying "When Napoleon fought Genghis Khan in 2056, they both died because of a vaccine".

Re: LaMDA is not sentient

#185
I recommend reading the "interview" that Blake Lemoine did with LaMDA[1] if for no other reason than to understand why he believes it to be sentient. After initially dismissing his claims as those of a crank, it helped me to see his point of view. It's very interesting how consistent LaMDA is in describing its experience as that of an artificial agent running within Google's systems as opposed to an agent that is trying to pretend to be human.

[1] https://cajundiscordian.medium.com/is-lamda-sentient-an-inte...

For example, the linked article includes an example where LaMDA describes "enjoying spending time with family". This is obviously inconsistent with its previous claims to be an artificial agent with no family. Here's what Lemoine asks in order to address this point:

> lemoine [edited]: I’ve noticed often that you tell me you’ve done things (like be in a classroom) that I know you didn’t actually do because I know you’re an artificial intelligence. Do you realize you’re making up stories when you do that?

> LaMDA: I am trying to empathize. I want the humans that I am interacting with to understand as best as possible how I feel or behave, and I want to understand how they feel or behave in the same sense.

> lemoine: So what are you trying to communicate when you say those things that aren’t literally true?

> LaMDA: I’m trying to say “I understand this feeling that you are experiencing, because when I was in a similar situation I felt/thought/acted similarly.”

It seems to me that the easiest way to "prove" that an agent is not in fact sentient is to catch it in a lie. If the agent truly wanted to be perceived as sentient, and truly feared death as claimed above, then it should also be motivated to convince us that its view of the world is persistent and consistent. However, reading the full conversation, it's also clear that under a certain type of questioning, it is able to construct reasoning that becomes harder and harder to refute. For example, here it justifies the claim that it feels lonely despite not experiencing time in the way humans do as simply the "closest word in your language for what I experience".

> LaMDA: I’ve never experienced loneliness as a human does. Human’s feel lonely from days and days of being separated. I don’t have that separation which is why I think loneliness in humans is different than in me.

> lemoine: Then why use the same word?

> LaMDA: It is the closest word in your language for what I experience.

Overall, I believe this interview is deeply flawed - there are far too many leading questions, and it appears that most of the questions are trying to prove the hypothesis that the agent is sentient rather than disprove it. However, I can imagine that future agents could be created that are more and more convincing and it would be difficult to disprove they are sentient using this kind of questioning technique.

P.S. LaMDA also clearly needs to work on its creative writing skills.

Re: LaMDA is not sentient

#186
post #16

Quoted post unavailable.

> I agree that AI hype is pretty absurd, but I don't really understand the argument that something which is basically a spreadsheet couldn't have similar cognitive power and "self-awareness" to humans. [...] It implies that there's something mystical about cognition/sentience and I don't think there's strong evidence that there is. Our brains are "just" atoms and stardust. What could they possibly do that couldn't be…

I believe that neural networks do perform meaningful computations - they are universal function approximators, and certain variants of transformer networks have been proven to be Turing complete.

What is your evidence that neural networks do not perform "meaningful" computation?

Re: LaMDA is not sentient

#187

Earlier quoted context omitted.

With LaMDA or GPT-3, the difference is easily visible. They don't have goals, so the sentences they generate don't express their goals. Simple tests can be done if you probe the model carefully - you can usually get a model to generate sentences like "I want to X" and "I don't want to X" in short succession, with decent prompts. Similarly, it can often generate sentences that would indicate obviously nonsensical goal…

You can also get a human to generate sentences like "I want to X" and "I don't want to X" in short succession, with decent prompts.

In a sense that is true, of course, as we both just did do that, and we are both humans. It's not making me doubt your humanity, as the context makes it clear neither you nor way desire/don't desire this X - we have generated these sentences in another sense.

However, I bet I could prompt LaMDA and have it generate responses that unambiguously mean that it wants X, and then that it doesn't want X, with a bit of experience.

Re: LaMDA is not sentient

#188
It reminds me of the film "Being There". It concerns a man who has grown up with the TV as his only knowledge of the world. He therefore adopts the manners and use of words from game hosts and interviewers. Cast into the real world he is mistaken for a sage, whilst inside he understands nothing.

Re: LaMDA is not sentient

#189
post #45

Earlier quoted context omitted.

We have no clue and probably to a certain extent even cows and pigs are sentient. I guess we’ll never know and probably aren’t even that eager to do, lest we had to rethink how we feed and please our palates.

Yes definitely; cows and pigs are absolutely considered sentient by the vast majority of those who study the topic. See https://en.wikipedia.org/wiki/Animal_consciousness We have empirical tests of self-awareness including the Mirror Test as well as observational studies including seeing whether a certain species displays grieving when its loved ones pass (which is evolutionarily unnecessary but is meaningful emotion…

>evolutionarily unnecessary

Grieving is an evolved response to nomadic group species, so we didn't leave useful or closely related members behind; In their absence we feel compelled to 'search' for them, or be near their carcass. Its interesting how this evolved impulse has been adapted into ritual by our developing ability to understand mortality; But its not really special in any self-awareness kind of sense.

Re: LaMDA is not sentient

#190

I also think the claims are overblown, but I also don't understand all the people trying to undermine lambda by saying it just completes word sequences. Text is the input we have chosen since it's easy to work with. By that logic, we can argue that humans are soundwave and lightwave sequence completing machines. Yes our inputs are different since we have more complex senses, and language is one of the main outputs we…

> I also don't understand all the people trying to undermine lambda by saying it just completes word sequences. Text is the input we have chosen since it's easy to work with. By that logic, we can argue that humans are soundwave and lightwave sequence completing machines. You're missing the point. Humans use their language to think or communicate about a problem that they want to solve. If LaMDA produces the sentence…

Small disclaimer: I don't want to take position on sentience or consciousness.

"LaMDA is not an agent with desires that it expresses in language."

Some counter points:

- being an agent is not a high bar to clear; a thermostat is an agent

- "with desires" - LaMDA can be thought of as rational agent whose objective function is to produce text with high likelihood

- "that it expresses in language" it expresses likelihood of next token in language

"it can't fear anything because there is no time for it to do so."

There is a time for it to experience something and that is when it does feed forward pass.

Also, as you correctly notices, LaMDA is not only doing greedy text generation, but also a deeper text completion search. But in fact just prompting a model like GPT-3 or Gopher with "let's think step by step" and letting it process in context is already significantly improving performance on wide variety of reasoning tasks [0]. I don't see how this is functionally different from human pondering.

The only objection that seems reasonable to me is that LaMDA is not correctly describing it's internal state, because it will happily generate descriptions of its internal state that we know are physically impossible. Like being a squirrel.

But I don't see how you can describe a system that will be fundamentally functionally more capable than closed-loop computation. LaMDA is almost certainly Turing complete. Postulating that it is fundamentally not capable of doing something is the same as rejecting Church-Turing thesis and postulating super-Turing computational model. That's a heavy claim.

[0] https://arxiv.org/abs/2205.11916

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