‘Like most of life’s dangers, the dangers of artificial intelligence are not easily identified from the armchair.’

I’m not an expert in this field, and herein I make some sweeping generalisations educated guesses about the overall nature of its contents based on my strong impression from the subset of work that I’ve read. I’ve recently spent maybe 2–300 hours learning about modern AI safety technical work, and some amount of spare time over the years before that thinking about here-relevant notions such as preferences from an analytic-philosophical perspective. I intend this post as a work in progress.

What if LLMs are less this… … and more this? [1]

‘Instrumental convergence’ (IC) is an intuitive thesis that seemingly supports high credences in AI takeover. It relies on the seemingly simple notion that to be able to reliably achieve its goals, an AI needs to optimise - and optimal states for arbitrary agents are unlikely to be compatible with leaving humans in control.

I’ve been suspicious of this argument for some time: it’s an incredibly load-bearing conclusion for an informal philosophical statement. When I wrote an essay arguing that the orthogonality thesis - which then seemed to be one of the core motivations for many people’s doom proclamations - held no weight, multiple commenters mentioned IC as a complementary, perhaps sufficient, reason for doomy prognoses.

But philosophy has an abysmal track record of grand categorical theories divorced from empirical work that get shattered by messy real-world details. Examples of successful such predictions are far scarcer. [2] This is not to claim that no such prediction ever comes true; but that we should be very conservative about forming and updating our priors based on informal arguments about systems that weren’t observed at the time of writing. And while deep learning has been around in some form for decades, its modern architecture would have been virtually impossible to predict - and its potential was actively denied - by proponents of IC at the time.

In this post I want to review historical arguments for IC, and then first defend a weak counterthesis: that the seminal arguments for instrumental convergence are importantly incomplete. Then, I’ll also offer two stronger countertheses for which my argument is more speculative, but which seem to me at least worth consideration. Firstly that our notions of goals are too broad and incoherent to be much use, secondly and even stronger-ly that there is no principled distinction between ‘goals’ and ‘capabilities’ in non-conscious systems. [3]

Multiple detailed critiques take IC at face value. In this essay, I don’t take it at face value, instead giving a simple lower-level critique: that instrumental convergence is too poorly defined for real-world prediction (and relatedly, poorly predictive of real-world events when we try to parse it).

For this I’ll rely on Nick Bostrom’s seminal definition in The Superintelligent Will …

as long as they possess a sufficient level of intelligence, agents having any of a wide range of final goals will pursue similar intermediary goals because they have instrumental reasons to do so … By “intelligence” here we mean something like instrumental rationality—skill at prediction, planning, and means-ends reasoning in general.

and on Stephen Omohundro’s even seminaler The Basic AI Drives :

a number of “drives” … will appear in [any] sufficiently advanced AI system … that has goals which it tries to accomplish by acting in the world

And in Carlsmith’s Is Power-Seeking AI an Existential Risk?

If a [system with advanced capabilities that performs agentic planning with strategic awareness] is less-than-fully aligned, and some of its misaligned behavior involves strategically-aware agentic planning in pursuit of problematic objectives, then in general and by default, we should expect it to be less-than-fully PS-aligned, too

Where being ‘less-than-fully PS-aligned’ means ‘engage[s] in misaligned power-seeking in particular in response to any physics-compatible inputs’.

I assume that Bostrom and Omohundro’s ‘goals’ are functionally synonymous with Carlsmith’s ‘objectives’. So as a top-level summary, I would unify these theses as the following prediction:

Top-level instrumental convergence hypothesis : Highly capable goal-driven agents will develop power seeking as an instrumental goal [4]

But both Bostrom and Omohundro identify more specific goals than ‘power-seeking’ they expect to see in such agents, and these clearly have substantial overlap:

I think the intersection of these looks both pretty representative (e.g. ‘technological perfection’ is arguably a sub-subgoal to those four), and a lot like a slightly lower-level understanding of the top-level IC hypothesis, so I propose considering Omohundro’s descriptions of these as central predictions of instrumental convergence theory (if you like, you can reinsert the top-level thesis as a distinct fifth prediction - it doesn’t affect the subsequent discussion):

These are obviously very informal but I think they’re a useful reference.

One thing missing from this definition is a confidence in its predictions. Read literally, it seems as though IC is a prediction that all of these behaviours are basically inevitable - and this conclusion has substantial support .

My aim in this post is not to show that any behavioural similarity to any of these is impossible or even particularly unlikely, but to claim that IC fails to provide a foundation that establishes the extent to which we should believe any of the following:

At this point I’m ready to defend the weak counterthesis:

Weak counterthesis : None of the seminal IC papers provide a way to identify ex-ante which if any physical systems ‘have terminal goals’, ‘have goal-directedness’, or otherwise ‘are goal havers’

Without such upfront identification, the hypothesis is not useable to make predictions without ex post identifications by IC proponents. And such ex post predictions risk identifying terminal goals in systems which they see as pursuing subgoals, rather than the reverse.

Bostrom only offers the synonym ‘purposes’. This doesn’t systematically identify anything - especially since the notion of apparent ‘purpose’ is famously insufficient to reliably identify a watchmaker goal-seeking agent.

Omohundro refers to an earlier essay in which he implicitly treats the preferences of a VNM utility function as ‘goals’:

‘The formal version of this prescription introduces explicit representations for the system’s goals and beliefs … A rational economic agent has a real-valued “utility function” U defined on … the set of all possible histories of the universe’

I’ll discuss goal-like interpretations of VNM’s utility theorem more below, but for the purposes of this section it’s enough to say the theorem doesn’t define real-world utility. That is, it shows that ‘an agent with a complete, transitive, continuous and independent set of preferences can be represented as maximising expected utility’. A ‘preference’ in this context is simply defined as the formalism A ≽ B, with the reader needing to fill in the real-world interpretation of that formalism. Omohundro does not do so.

Carlsmith acknowledges his definition is incomplete, but imagines that ‘something close enough ’ to ‘(a) using a model of the world that represents causal relationships between actions/outputs/policies and outcomes to (b) select actions/outputs/policies that lead to outcomes that rate highly according to various (possibly quite complicated) criteria (e.g., objectives)’ is sufficient to establish the thesis.

Again, I’ll discuss goal-like interpretations of ‘policies’ below. Here I simply observe that Carlsmith doesn’t give any real world definition of ‘closeness’ or a sense of how close would be close enough to establish the thesis. Based on his own credences in the abstract, Carlsmith isn’t trying to establish certainty or even high confidence so much as raise a concern, so I’m unsure how much disagreement we have - it seems like Carlsmith might agree with the weak counterthesis.

The LW wiki is presumably the most recently updated description of IC , so maybe reflects the current thinking on the subject, at least among the rationalist community. Its notion of a ‘(terminal) goal’ appears to be a combination of rule out clauses - ‘computable, tractable [and] bounded’ - with the rule-in clause that it is ‘treated as [a] utility function’, with a utility function previously specified as a ‘relation U k between descriptions o L of outcomes o, and the corresponding utilities r’. That is, an unspecified ‘treater’ identifies it as a goal. This is clearly ex post.

At this point you could be forgiven for thinking this essay is just an exercise in pedantry. There’s something deeply intuitive about goals, that’s encapsulated in the popular refrain ‘ you can’t fetch the coffee if you’re dead ’. Should we be so fastidious as to quibble that idea on a technicality? Short answer: I think we should.

For one thing, however intuitive this refrain appears to be at face value, if it’s used to support the claim that self-preserving AIs are likely , let alone that AIs who aim to destroy humanity for the sake of self-preservation are likely , then its substantive claim seems much less obvious.

The problem with the statement is the enormous range of goal-notions it equivocates across. Some degenerately imply self-preservation with such a goal, some degenerately imply the opposite. To give some very non-exhaustive and probably overlapping examples of issues the architecture and function of a coffee-fetching agent would need to resolve:

The Appendix describes a longer list of such ambiguities. But for our purposes here, it seems like the positive/negative axis is enough to bisect decision space, such that for virtually any positive goal we can imagine that would motivate existing-to-fetch-coffee, there’s a negative version of the goal for which nonexistence would satisfy it at least equally as well as coffee-fetching. [5]

Further subdividing that bisected space, there are many coffee-oriented-goals that would make non-existence seem at least as reasonable as existence. Wireheadability may not be sufficient (an agent might want to maximise the expected duration of its wireheading), but at least some configurations of it are (e.g. a wireheadable agent whose goal was to maximise the probability or minimise the time that it took to receive an input string with a coffee-made-like quality).

I’m not claiming that a naive partitioning of some well-defined goal-notion-space gives us the real-world probability of such agents. I’m claiming that, per the opening quote, the vast range of possible coffee-fetching architectures means that we cannot reliably predict from our armchair that advanced coffee-makers will self-preserve.

There are many goal definitions in existing literature, so perhaps one could plug them in to the IC thesis. In a subsequent post I hope to look more in depth at these options - but my provisional impression is that such definitions near-universally leave some key element of goalishness in the eye of the beholder in one of a few related ways:

At the risk of stating the obvious, any deductive proof that IC follows from some chosen set of premises is a proof that those premises already encode IC. If we identify a real-world system with analogous properties the proof can help model it, but it cannot be an existence proof of such a real-world system - let alone evidence that we will encounter one.