Working to reduce extreme suffering for all sentient beings.
Author of Suffering-Focused Ethics: Defense and Implications; Reasoned Politics; & Essays on Suffering-Focused Ethics.
Co-founder (with Tobias Baumann) of the Center for Reducing Suffering (CRS).
On “cold computing”: to clarify, the piece I linked to was not about aestivation / waiting. It was about using “cold computing” right away.
The comment from gwern lists some reasons that may speak against “cold computing” (in general) as playing a significant role in answering the Fermi question, but again, a question is how decisive those reasons are. Even if such reasons should lead us to think that “cold computing” plays no significant role with 95 percent confidence, it still seems worth avoiding the mistake of belief digitization: simply collapsing the complementary 5 percent down to 0.
In any case, the point about “cold computing” was merely a disjunctive possibility; the broader point about observer prevalence being unclear in ‘grabby vs. quiet expansionist scenarios that include sims’ does not rest on that particular possibility.
On simulations: I think it can make sense to set the simulation argument aside, at least provisionally, for a couple of reasons:
The hypothesis that ancestor simulations (e.g. exact copies of your current conscious experience) are impossible to create seems like a plausible hypothesis that is worth exploring in its own right. (One can think that it is worth exploring even if one believes that faithful ancestor simulations are most likely possible.)
Even if we grant that ancestor simulations are possible and trivially feasible, it still makes sense to explore the non-sim (or pre-sim) case, since that would presumably apply to the original simulators (if we assume an ancestor simulation picture in which our world at least roughly matches the original simulators’ world). After all, if the anthropic argument holds for the OG simulators, then it would also hold for their ancestor simulations, assuming that those simulations really are ancestor simulations (somewhat analogously to a proof by induction). In this way, the ‘non-sim case’ seemingly has significant implications for what kind of simulation one should expect to be in (at least given the preceding assumptions).
If one includes sims, grabby civs would possibly but not necessarily have more observers (like us) than quiet expansionist civs. For example, the expected number of sims may be roughly the same, or even larger, in quiet expansionist scenarios that involve a deadline/shift (cf. sec. 4).[1] There’s also the possibility that computation could be more efficient in quiet regimes (some have argued along these lines, though I’m by no means saying it’s correct; I’m not sure if we currently understand physics well enough to make confident pronouncements either way).
But yes, the argument outlined in Section 3 was limited to “base reality” scenarios. Conditional on you not being in a simulation (e.g. if exact sims of your conscious experience are not possible), the anthropic argument in Section 3 suggests that you’re in a quiet expansionist scenario, or in a quiet expansionist region within a mixed scenario. Conditional on you being in a simulation, it seems unclear.
Why might it be even larger? Intuitively, one might think that grabby civs could start simulating earlier, since they don’t have to wait and be quiet. But in the quiet expansionist model, expansionist civ origin dates would, in expectation, be significantly earlier, since we could be past the point where they’ve fully colonized. That is, in a grabby model, we’d now be pre-deadline and pre-colonized, whereas we may be “post-colonized” in the quiet expansionist model — indeed, we most likely would be if the hard-steps model is correct. So the expansionist civs would be considerably older (they could even be much older) in the quiet expansionist vs. the grabby model. Thus, if we only look at the past, it’s conceivable that quiet civs would be able to run more sims, even if they have considerably fewer sims per colonized volume (as they might make up for it by having far more time and volume).
At any rate, given the apparent size of the cosmic future compared to the past, what matters most for the expected number of sims is hardly earliness (e.g. full cosmic expansion at 9 vs. 15 billion years), but arguably more something like future willingness and capacity to devote resources toward simulations. And when it comes to the willingness aspect, I can see some reasons to think that civs that started out as quiet expansionists up till our point (not necessarily staying that way) might have more incentive to simulate vs. grabby ones. For example, the strategic situation and motives in quiet expansionist scenarios would plausibly be more concerned with potential adversaries from elsewhere, and civs in such scenarios may thus be significantly more inclined to simulate the developmental trajectories of potential adversaries from elsewhere, or civs that could give information about such adversaries. Of course, this is speculative, but it serves to show that the picture with sims is complicated and the upshots are non-obvious.
The dark matter thought has crossed my mind too (and others have also speculated along those lines). Yet the fact that dark matter appears to have been present in the very early universe speaks strongly against it — at least when it comes to the stronger “be” conjecture, less so the weaker “contain” conjecture, which seems more plausible.
I see, thanks for clarifying.
In terms of potential tradeoffs between expansion speeds vs. spending resources on other things, it seems to me that one could argue in both directions regarding what the tradeoffs would ultimately favor. For example, spending resources on the creation of Dyson swarms/other clearly visible activity could presumably also divert resources away from maximally fast expansion. (There is also the complication of transmitting the resulting energy/resources to frontier scouts, who might be difficult to catch up with if they are at ~max speeds.)
By rough analogy, if a human army were to colonize a vast (initially) uninhabited territory at max speed, it seems plausible that the best way to do so is by having frontier scouts rush out there in a nimble fashion, not by devoting a lot of resources toward the creation of massive structures right away. (And if we consider factors beyond speed, perhaps not being clearly visible also has strategic advantages if we add uncertainty about whether the territory really is uninhabited — an uncertainty that would presumably be present to some extent in all realistic scenarios.)
Of course, one could likewise make analogies that point in the opposite direction, but my point is simply that it seems unclear, at least to me, whether these kinds of tradeoff considerations would overall favor “loud civ expansion speed > quiet civ expansion speed” (assuming that there are meaningful tradeoffs).
Besides, FWIW, it seems quite plausible to me that advanced civs would be able to expand at the maximum possible speed regardless of whether they opted to be loud or quiet (e.g. they might not be driven by star power, or their technology might otherwise be so advanced that these contrasting choices do not constrain them either way).
Thanks for your comment. :) One reason I didn’t use the term “zoo hypothesis” is that I’ve seen it defined in rather different ways. Relatedly, I’m unsure what you mean by zoo vs. natural reserve hypotheses/scenarios. How are these different, as you use these terms? Another question is whether proportions of zoos vs. natural reserves on Earth can necessarily tell us much about “zoos” vs. “natural reserves” in a cosmic context.
Thanks for your comment, Jim. :)
Why would you expect grabby aliens to expand faster than quiet expansionist ones? I didn’t readily find a reason in your linked piece, and I don’t see why loud vs. quiet per se should influence expansion speeds; both could presumably approach the ultimate limit of what is physically possible?
Thanks for your comment and for the links :)
I don’t think we have compelling video evidence at all
I’d agree that there’s no compelling video evidence in the sense of it being remotely conclusive; it’s possible that it’s all mundane. But it seems to me that some of the footage is sufficiently puzzling/sufficiently unclear so as to be worthy of investigation, and that it provides some (further) reason to take this issue seriously. I agree that the reports, including reports involving radar evidence, are more noteworthy in terms of existing evidence.
Regarding the Aguadilla 2013 footage: perhaps this can be explained in conventional terms, but the aspiring analysts on metabunk seem to deny that the object went into the water and moved in the water, which seems wrong to me (of course, I acknowledge that it can be difficult to interpret and make sense of footage like this). A contrasting analysis, which also includes some highly anomalous radar evidence related to the event, can be found in Coumbe, 2022, ch. 5.
On the 2010 NYC footage: You could be right, it’s possible that they are tethered balloons (although the patterns of movement don’t seem to me consistent with that; e.g. even after the distances between the three objects increase, they still seem to move together in “fixed” unison). I also find it worth noting that Carolina Londono from New York comments the following (edit: I include this comment only as very weak evidence, of course, but FWIW, I’m fairly confident that I’ve identified this person and I’m trying to authenticate the comment; it’s also worth noting that the comment is consistent with many other UFO reports, especially the part about the objects accelerating away near-instantaneously at the end):
I never leave comments on anything, ever. But I sought to find this video because I was there that day. I stood there for a very long time, and it really was an insane experience. For those saying these were “weather balloons” etc. Trust me, they weren’t. What this footage didn’t capture was that as it continued, more of these objects appeared, making all sorts of shapes, joining closer together then quickly going apart just hovering. All of the sudden, they disappeared in a way that I can only describe as cartoonish (like when the roadrunner would quickly run and disappear out of frame and only leave smoke). Like I said, it was insane.
I feel like this post gets it backwards and tries to find reasons why it’s reasonable to take UFOs seriously instead of arriving at that conclusion after careful deliberation.
The starting point of the post is that there are sufficient grounds for curiosity in light of existing reports/evidence. So to be clear, the initial and main motivation I present for taking UFOs seriously is that evidence, which I claim crosses the bar for “worthy of taking a closer look”.
I admit that the connection UFO <-> extraterrestrial intelligence is more immediate than in other cases, but I think that ignores the priors.
FWIW, I’ve written some posts related to priors, outlining some reasons why I don’t think they should be that low:
Can we confidently dismiss the existence of near aliens? Probabilities and implications
Particularly this section
[Edit: Silent cosmic rulers — a more recent post that presents an anthropic argument that favors a pretty high prior, or at least pushes in that direction.]
See also Hanson’s post “On UFOs-As-Aliens Priors” and these comments by Jacob Cannell.
Also I’m very unconvinced by and skeptical about underlining the credibility of the “serious” UFO discourse by providing a list of prominent people engaged with it; I’m positive you can do similarly impressive lists for exactly the sort of discourse of paranormal phenomena you’re trying to distinguish from.
This seems to misunderstand what I tried to do with that list. The point is not simply to list some prominent people, but rather to give examples of, and direct readers to, the content of the serious UFO discourse. That is, my hope is not that readers will just look at that list of people and find it impressive or so, but instead that readers will check out the content of what these people have said: the data they provide, how they reason, and so on.
Sure, it is in itself somewhat interesting that a physicist like Daniel Coumbe has researched the topic and written a book about it, but what is far more interesting is the actual content of that book. So too for the books written by J. Allen Hynek (astronomer and initial debunker).
Also, is it really true that you can find nuclear launch officers (or the like) who have claimed that some other paranormal phenomenon interfered with their nuclear weapons (or a similarly consequential system)?
For one, eye-witness reports of UFOs have in many cases been corroborated by radar evidence, which to my knowledge has not happened in the case of any claimed miracles. (See e.g. this playlist, the 1952 Washington DC incident, the 1986 Brazil incident, and Coumbe, 2022.)
Second, the eye-witnesses are in many cases trained pilots who describe going through a fairly rational process of hypothesis testing, like “first I thought it might be a balloon, then that was ruled out by x maneuver”, “then I thought of y conventional hypothesis, but that was ruled out by z”. And the witnesses generally don’t have any interest in UFOs, and they often report finding it difficult to believe what they saw.
Third, there are a number of cases where different pilots report seeing the same object from different angles (e.g. Dietrich and Fravor from different jets).
Thanks for asking :)
Some background notes that may be relevant: When I first heard about the UFO topic in a more serious way (I think when Sam Harris first talked about it, ~2017-2018?), I searched for debunkings and came upon Mick West’s debunking videos. I found them convincing and in effect I dismissed the topic for years, feeling vindicated in my pre-existing position of total dismissal toward the topic (until I read Hanson’s post “My awkward inference” in late April 2023 and decided to take a deeper look, as described at the outset of this post).
Second, West has made various debunking videos that are IMO clearly on point, in the sense of successfully explaining some allegedly anomalous footage in mundane terms. Such debunkings are helpful and represent one of the ways in which his presence in the discussion is valuable, IMO.
Third, I’ve heard various interviews with Mick West, including with people who have different perspectives than him, and in those interviews he tends to come across as a lot more open-minded and cautious than how he comes across in his debunking videos, where he often seems (to me) more animated by motivated reasoning (like: “It must be this thing”). This is perhaps not surprising, since a debunking video sort of does have a preconceived aim, namely to debunk, which is not quite the same as neutrally analyzing. (West himself seems to make some related concessions here.) So seeing him in such interviews and conversations can IMO help give a more balanced sense of Mick West’s thinking (and also of how he’s a lot more friendly and good-natured than how he can come across in places like Twitter, but maybe that’s a truism at this point :).
Moving on to the more substantive side of things. One problem, in my view, is that West sometimes gives explanations that don’t seem consistent with the evidence that surrounds the footage in question, which is sometimes more noteworthy. For example, in the Nimitz case, he attempts to debunk the FLIR footage (shot by Chad Underwood), but even if that debunking were successful, he seems to have no plausible explanation for the data reported by pilots such as Alex Dietrich and David Fravor (two of the four pilots who saw the “tic-tac” object directly), or radar experts such as Kevin Day and Gary Voorhis. I think it would be convenient if we could just close our eyes and ears and ignore what these people have reported, but that doesn’t seem to me like good epistemic practice (even though it makes sense to be skeptical, of course).
The same goes for the so-called Gimbal video (which, FWIW, I don’t have any particular take on myself). For instance, he seems to ignore that one of the pilots says “There’s a whole fleet of them, look on the SA [Situational Awareness; a kind of display that monitors surroundings, AFAIU]”. That would at least seem to pose a problem for his proposed explanation of the footage. (For some additional criticism/another perspective on Gimbal in particular, see e.g. https://arxiv.org/pdf/2306.08773 and https://www.youtube.com/watch?v=WsbMIm9QtEA)
In general, I think West is valuable for the broader discussion, but I don’t think his commentary gives us reason to dismiss the subject (as I once did). I think there’s good reason to take a closer look at the evidence, and I would encourage people to do so (I suspect that this is the biggest bottleneck preventing people from taking the issue seriously: actually looking at the evidence).
FWIW, I don’t see that piece as making a case against panpsychism, but rather against something like “pansufferingism” or “pansentienceism”. In my view, these arguments against the ontological prevalence of suffering are compatible with the panpsychist view that (extremely simple) consciousness / “phenomenality” is ontologically prevalent (cf. this old post on “Thinking of consciousness as waves”).
The following list of reports may or may not be helpful to include in the ‘Further reading’ section, but I don’t think that’s for me to decide since it’s collected by me and published on my blog: https://magnusvinding.com/2023/06/11/what-credible-ufo-evidence/
A similar critique has been made in Friederich & Wenmackers’ article “The future of intelligence in the Universe: A call for humility”, specifically in the section “Why FAST and UNDYING civilizations may not be LOUD”.
Yeah, it would make sense to include it. :) As I wrote “Robin Hanson has many big ideas”, and since the previous section was already about signaling and status, I just mentioned some other examples here instead. Prediction markets could have been another one (though it’s included in futarchy).
Thus it is not at all true that that we ignore the possibility of many quiet civs.
But that’s not the claim of the quoted text, which is explicitly about quiet expansionist aliens (e.g. expanding as far and wide as loud expansionist ones). The model does seem to ignore those (and such quiet expansionists might have no borders detectable by us).
[Edit: For more on quiet expansionist civilizations, see the more recent post “Silent cosmic rulers”.]
Thanks, and thanks for the question! :)
It’s indeed not obvious what I mean when I write “a smoothed-out line between the estimated growth rate at the respective years listed along the x-axis”. It’s neither the annual growth rate in that particular year in isolation (which is subject to significant fluctuations), nor the annual average growth rate from the previously listed year to the next listed year (which would generally not be a good estimate for the latter year).
Instead, it’s an estimated underlying growth rate at that year based on the growth rates in the (more) closely adjacent years. I can see that the value I estimated for 2021 was 2.65 percent, the average growth rate from 2015-2022 (according to the data from The World Bank). One could also have chosen, say, 2020-2022, which would yield an estimate of 2.01 percent, but that’s arguably too low an estimate given the corona recession.
I think this is an important point. In general terms, it seems worth keeping in mind that option value also entails option disvalue (e.g. the option of losing control and giving rise to a worst-case future).
Regarding long reflection in particular, I notice that the quotes above seem to mostly mention it in a positive light, yet its feasibility and desirability can also be separately criticized, as I’ve tried to do elsewhere:
First, there are reasons to doubt that a condition of long reflection is feasible or even desirable, given that it would seem to require strong limits to voluntary actions that diverge from the ideal of reflection. To think that we can choose to create a condition of long reflection may be an instance of the illusion of control. Human civilization is likely to develop according to its immediate interests, and seems unlikely to ever be steered via a common process of reflection.
Second, even if we were to secure a condition of long reflection, there is no guarantee that humanity would ultimately be able to reach a sufficient level of agreement regarding the right path forward — after all, it is conceivable that a long reflection could go awfully wrong, and that bad values could win out due to poor execution or malevolent agents hijacking the process.
The limited feasibility of a long reflection suggests that there is no substitute for reflecting now. Failing to clarify and act on our values from this point onward carries a serious risk of pursuing a suboptimal path that we may not be able to reverse later. The resources we spend pursuing a long reflection (which seems unlikely to ever occur) are resources not spent on addressing issues that might be more important and more time-sensitive, such as steering away from worst-case outcomes.
Thanks for your question, Péter :)
There’s not a specific plan, though there is a vague plan to create an audio version at some point. One challenge is that the book is full of in-text citations, which in some places makes the book difficult to narrate (and it also means that it’s not easy to create a listenable version with software). You’re welcome to give it a try if you want, though I should note that narration can be more difficult than one might expect (e.g. even professional narrators often make a lot of mistakes that then need to be corrected).
Thanks for your comment, Michael :)
I should reiterate that my note above is rather speculative, and I really haven’t thought much about this stuff.
1: Yes, I believe that’s what inflation theories generally entail.
2: I agree, it doesn’t follow that they’re short-lived.
In each pocket universe, couldn’t targeting its far future be best (assuming risk neutral expected value-maximizing utilitarianism)? And then the same would hold across pocket universes.
I guess it could be; I suppose it depends both on the empirical “details” and one’s decision theory.
Regarding options a and b, a third option could be:
c: There is an ensemble of finitely many pocket universes wherein new pocket universes emerge in an unbounded manner for eternity, where there will always be a vast predominance of (finitely many) younger pocket universes. (Note that this need not imply that any individual pocket universe is eternal, let alone that any pocket universe can support the existence of value entities for eternity.) In this scenario, for any summation between two points in “global time” across the totality of the multiverse, earlier “pocket-universe moments” will vastly dominate. That might be an argument in favor of extreme neartermism (in that kind of scenario).
But, of course, we don’t know whether we are in such a scenario — indeed, one could argue that we have strong anthropic evidence suggesting that we are not — and it seems that common-sense heuristics would in any case speak against giving much weight to these kinds of speculative considerations (though admittedly such heuristics also push somewhat against a strong long-term focus).
Thanks for letting me know. :) I wasn’t aware that Smashwords required registration. The PDF is also available here (expanded edition here).