Technological Singularity on Cracked.com
I missed this one, from May: "The 5 Most Likely Ways Humans Will Become Obsolete". See other articles on the Singularity that have reached the front page of Digg here. H/t to Roko for pointing me there.
“Benefits of a Successful Singularity” Reaches the Front Page of Digg
My Good.is article from earlier this week, "Benefits of a Successful Singularity", reached the front page of Digg. I am boosting my stat in the "Memetics" skill.
Here's an interesting comment from a reader, which summarizes the article in the first paragraph and comments in the next:
AI is on the horizon, but we need to figure out how to create intelligence through algorithms, we can't just keep souping up our hardware. AI will bring a major economic boost, lifting all boats, so to speak, across the planet, to beyond even what us hedonist westerners enjoy.
The next question is what we do with all this new wealth and knowledge, and where we go from there.I think the author underestimates the impact of AI on our world. To even mention 'economy' is folly; with true AI an 'economy' would become obsolete. What use is an economy where anybody can get anything they want, and machines can perform any menial or non-menial task?
Yes, indeed! But, saying that outright can get some people riled up. Following the advice of Robin Hanson, I try to be weird in as few ways at possible to get my point across at any given time.
One of the comments singles out a particularly convoluted line:
"but each neuron operates so slowly that a $10,000 desktop supercomputer can execute 933 billion operations per second"
...what?
My point here is that this is within a factor of 10,000 of most estimates of the computing power of the human brain. That's what I write right after that. Yes, it's a slightly convoluted sentence that I had trouble writing, but I'm still trying to make the point that the Tesla Personal Supercomputer is surprisingly close to the computing power of the human brain. This ties in with my point that AI is about software, not hardware.
Someone also noticed:
I like that this article has advertisements for Caprica all along the right border.
It is a cool ad, isn't it?
Another guy said:
Too long, did not read.
Wow -- it's two pages. As someone who used to frequent Digg daily for more than two years, I am familiar with how low the average intellectual standard of your average "nerd" is. Anything longer than a 200-word AP press release or an XCKD comic is not worth taking time from games for.
Complexity Metric Blog on Jaron Lanier vs. Eliezer Yudkowsky
Here is the commentary. Most of all, I enjoy reviews and comments by outsiders with no contact with our current community. Here are a few quotes and my comments:
It is video conference phone call split screen debate between this Yudkowsky guy who is the head scientist at the Singularity Institute, and Lanier who has been the genius hippy in red dread locks since his early pioneering work with Virtual Reality and artificial vision systems.
Before you click the link, let me frame the debate.
These two guys represent the two extremes of a subtle range of viewpoints on evolution, AI, and human consciousness.
An interesting and subtle range that deserves more popular and academic attention and will get it sooner or later because we are building technologies that produce divisive responses to the relevant philosophical issues.
Jaron's main criticism of the hard AI camp in this debate is that their strong attachment to finding a way past death and their apriori beliefe in the posibility of resonably building self evolving intelegence together become so rhetorically invasive that they can no longer do objective investigation or engineering... that their beliefs and desires make them "religious".
Well, Jaron would probably prefer if we didn't do any objective investigation or engineering, but that's not true. Remember, as cybernetic totalists, we are totally devoted to our goal. Totally awesome!
From my perspective, Jaron is a nothing more than a (very bright) priest who can't stop doing science in the basement, and Yudkoswsky is nothing less than a scientist that can't help wanting to build a God.
Hah! A superintelligence would be like a god. I can vaguely understand why people who don't regard MNT as plausible would disagree with this, but I never understand why those who do believe that MNT is plausible would.
The fireworks in the video begin at 11:00! I actually agree with many of Jaron's points in the abstract. I disagree with him when he says that we cannot represent some physical systems in totality or simulate them precisely.
God’s Laws of Robotics
First Law: A robot must be made to suffer physical and emotional pain.
Second Law: A robot must be free to turn into an evil robot at will, especially when this contributes to the First Law.
Third Law: A robot must be given no knowledge of its creator except through confusing manuscripts created by other robots, especially insomuch as this contributes to the First or Second Law.
-- Edwin Evans
Steve Rayhawk’s Breakdown of Factors Involved in the Findings of the AAAS Panel on “Long-Term AI Futures”
In February 2009, the President of the American Association for Artificial Intelligence, Eric Horvitz, convened a panel on "long-term AI futures" which explicitly delved into issues around the Singularity and intelligence explosion. Horvitz has told me (and the New York Times) that the reason he convened the panel was not due to personal interest or concern in the issue but in response to the public interest and concern in the issue.
In the New York Times article covering the meeting, Horvitz was quoted as saying, "My sense was that sooner or later we would have to make some sort of statement or assessment, given the rising voice of the technorati and people very concerned about the rise of intelligent machines". In August, they released an interim report that said:
Popular perspectives on the outcomes of AI research include expectation that there will be one or more disruptive outcomes. These include that notion that the research will somehow lead to the advent of utopia or catastrophe. The utopian perspective is perhaps best captured in the writings of Ray Kurzweil and others, who speak of a forthcoming “technological singularity.†At the other end of the spectrum, some people are concerned about the “rise of intelligent machines,†fueled by popular novels and movies, that tell stories of the loss of control of robots. Whether forecasting utopian or catastrophic outcomes, the radical perspectives are frightening to people in that they highlight some form of radical change on the horizon—often founded on a notion of the loss of control of the computational intelligences that we create.
The panel of experts was overall skeptical of the radical views expressed by futurists and science-fiction authors.
To me, this was a disappointing result. The phrasing is also disappointing. It is not just the opinion of "popular perspectives" that AI will "somehow" lead to the advent of utopia or catastrophe. Many academics (including AI researchers) have presented views that AI would be highly disruptive, including Ray Solomonoff, Nick Bostrom, Shane Legg, Matt Mahoney, I.J. Good, Bill Gates, Hans Moravec, Marvin Minsky, and many others. Solomonoff, Moravec, and Minsky have all been leaders in AI for decades, so it seems like a deliberate choice of focus to attribute "radical views" to the public rather than AI experts. It provides the AAAS panel with a comfortable level of removal from the claims, a level of removal they could not easily obtain if they cited Solomonoff, Moravec, and Minsky as the sources of Singularity views.
It is remarkable for the panel to suggest that AI will probably not result in disruptive outcomes -- if you can turn a pile of sand into a thinking intelligence in the time it takes you to fabricate a computer chip and transfer files to it, then that wouldn't be disruptive? In my view, it is the degree of disruption that is up for debate -- I don't take people very seriously if they imply there will be little or no disruption whatsoever.
In wondering why the panel came up with this result, Eliezer Yudkowsky suggested "snap consideration and snap judgment". However, Steve Rayhawk offered a more detailed analysis, which I will post in its entirety here, with a few formatting changes to ensure successful reposting. The first two sentences are a quote that Rayhawk is responding to. Everything that follows from this point on (except for the last line and the quote) was posted by Steve Rayhawk to Less Wrong.
Roughly, what I expect to happen by default is no modular analysis at all - just snap consideration and snap judgment. I feel little need to explain such.
You, or somebody anyway, could still offer a modular causal model of that snap consideration and snap judgment. For example:
1. What cached models of the planning abilities of future machine intelligences did the academics have available when they made the snap judgment?
1.1 What fraction of the academics are aware of any current published AI architectures which could reliably reason over plans at the level of abstraction of "implement a proxy intelligence"?
1.1.1 What fraction of them have thought carefully about when there might be future practical AI architectures that could do this?
1.1.2 What fraction use a process for answering questions about the category distinctions that will be known in the future, which uses as an unconscious default the category distinctions known in the present?
2. What false claims have been made about AI in the past? What decision rules might academics have learned to use, to protect themselves from losing prestige for being associated with false claims like those?
2.1 How much do those decision rules refer to modular causal analyses of the object of a claim and of the fact that people are making the claim?
2.2 How much do those decision rules refer to intuitions about other peoples' states of mind and social category memberships?
2.3 How much do those decision rules refer to intuitions about other peoples' intuitive decision rules?
2.4 Historically, have peoples' own abilities to do modular causal analyses been good enough to make them reliably safe from losing prestige by being associated with false claims? What fraction of academics have the intuitive impression that their own ability to do analysis isn't good enough to make them reliably safe from losing prestige by association with a false claim, so that they can only be safe if they use intuitions about the states of mind and social category memberships of a claim's proponents?
3. Of those AI academics who believe that a machine intelligence could exist which could outmaneuver humans if motivated, how do they think about the possible motivations of a machine intelligence?
3.1 What fraction of them think about AI design in terms of a formalism such as approximating optimal sequential decision theory under a utility function? How easy would it be for them to substitute anthropomorphic intuitions for correct technical predictions?
3.2 What fraction of them think about AI design in terms of intuitively justified decision heuristics? How easy would it be for them to substitute anthropomorphic intuitions for correct technical predictions?
3.3 What fraction of them understand enough evolutionary psychology and/or cognitive psychology to recognize moral evaluations as algorithmically caused, so that they can reject the default intuitive explanation of the cause of moral evaluations, which seems to be: "there are intrinsic moral qualities attached to objects in the world, and when any intelligent agent apprehends an object with a moral quality, the action of the moral quality on the agent's intelligence is to cause the agent to experience a moral evaluation"?
3.3.1 What combination of specializations in AI, moral philosophy, and cognitive psychology would an academic need to have, to be an "expert" whose disagreements about the material causes and implementation of moral evaluations were significant?
4. On the question of takeoff speeds, what fraction of the AI academics have a good enough intuitive understanding of decision theory to see that a point estimate or default scenario should not be substituted for a marginal posterior distribution, even in a situation where it would be socially costly in the default scenario to take actions which prevent large losses in one tail of the distribution?
4.1 What fraction recognized that they had a prior belief distribution over possible takeoff speeds at all?
4.2 What fraction understood that, regarding a variable which is underconstrained by evidence, "other people would disapprove of my belief distribution about this variable" is not an indicator for "my belief distribution about this variable puts mass in the wrong places", except insofar as there is some causal reason to expect that disapproval would be somehow correlated with falsehood?
5 What other popular concerns have academics historically needed to dismiss? What decision rules have they learned to decide whether they need to dismiss a current popular concern?
5.1 After they make a decision to dismiss a popular concern, what kinds of causal explanations of the existence of that concern do they make reference to, when arguing to other people that they should agree with the decision?
5.2 How much do the true decision rules depend on those causal explanations?
5.3 How much do the decision rules depend on intuitions about the concerned peoples' states of mind and social category memberships?
5.4 How much do the causal explanations use concepts which are implicitly defined by reference to hidden intuitions about states of mind and social category memberships?
5.4.1 Can these intuitively defined concepts carry the full weight of the causal explanations they are used to support, or does their power to cause agreement come from their ability to activate social intuitions?
6. Which people are the AI academics aware of, who have argued that intelligence explosion is a concern? What social categories do they intuit those people to be members of? What arguments are they aware of? What states of mind do they intuit those arguments to be indicators of (e.g. as in intuitively computed separating equilibria)?
6.1 What people and arguments did the AI academics think the other AI academics were thinking of? If only a few of the academics were thinking of people and arguments who they intuited to come from credible social categories and rational states of mind, would they have been able to communicate this to the others?
7. When the AI academics made the decision to dismiss concern about an intelligence explosion, what kinds of causal explanations of the existence of that concern did they intuitively expect that they would be able make reference to, if they later had to argue to other people that they should agree with the decision?
It is also possible to model the social process in the panel:
8. Are there factors that might make a joint statement by a panel of AI academics reflect different conclusions than they would have individually reached if they had been outsiders to the AI profession with the same AI expertise?
8.1 One salient consideration would be that agreeing with popular concern about an intelligence explosion would result in their funding being cut. What effects would this have had?
8.1.1 Would it have affected the order in which they became consciously aware of lines of argument that might make an intelligence explosion seem less or more deserving of concern?
8.1.2 Would it have made them associate concern about an intelligence explosion with unpopularity? In doubtful situations, unpopularity of an argument is one cue for its unjustifiability. Would they associate unpopularity with logical unjustifiability, and then lose willingness to support logically justifiable lines of argument that made an intelligence explosion seem deserving of concern, just as if they had felt those lines of argument to be logically unjustifiable, but without any actual unjustifiability?
8.2 There are social norms to justify taking prestige away from people who push a claim that an argument is justifiable while knowing that other prestigious people think the argument to to be a marker of a non-credible social category or state of mind. How would this have affected the discussion?
8.3 If there were panelists who personally thought the intelligence explosion argument was plausible, and they were in the minority, would the authors of the panel's report mention it?
8.3.1 Would the authors know about it?
8.3.2 If the authors knew about it, would they feel any justification or need to mention those opinions in the report, given that the other panelists may have imposed on the authors an implicit social obligation to not write a report that would "unfairly" associate them with anything they think will cause them to lose prestige?
8.3.3 If panelists in such a minority knew that the report would not mention their opinions, would they feel any need or justification to object, given the existence of that same implicit social obligation?
9. How good are groups of people at making judgments about arguments that unprecedented things will have grave consequences?
9.1 How common is a reflective, causal understanding of the intuitions people use when judging popular concerns and arguments about unprecedented things, of the sort that would be needed to compute conditional probabilities like "Pr( we would decide that concern is not justified | we made our decision according to intuition X ∧ concern was justified )"?
9.2 How common is the ability to communicate the epistemic implications of that understanding in real-time while a discussion is happening, to keep it from going wrong?
A great breakdown, worth thinking carefully about.
Peter Singer on Roboethics — Mentions the Singularity Institute
Peter Singer, one of the world's most influential public intellectuals, and co-author, independent Warsaw-based ethicist Agata Sagan, have published an article called "Rights for Robots?" at the Project Syndicate website. Project Syndicate is "the world's foremost provider of original commentaries, bringing distinguished voices from around the planet to readers of 432 newspapers in 150 countries." Other contributors to the site include Bjørn Lomborg, George Soros, Mikhail Gorbachev, and other distinguished persons. Here is the excerpt from the article that mentions SIAI and Eliezer Yudkowsky:
A more ominous question is familiar from novels and movies: Will we have to defend our civilization against intelligent machines of our own creation? Some consider the development of superhuman artificial intelligence inevitable, and expect it to happen no later than 2070. They refer to this moment as “the singularity,†and see it as a world-changing event.
Eliezer Yudkowsky, one of the founders of The Singularity Institute for Artificial Intelligence, believes that singularity will lead to an “intelligence explosion†as super-intelligent machines design even more intelligent machines, with each generation repeating this process. The more cautious Association for the Advancement of Artificial Intelligence has set up a special panel to study what it calls “the potential for loss of human control of computer-based intelligences.â€
The panel found that the probability of an intelligence explosion was not great. But see Steve Rayhawk's analysis for reasons why the chance they would find otherwise would indeed be quite low.
Me on FastForward Radio Tonight
Tonight I will be on FastForward Radio with hosts Phil Bowermaster and Stephen Gordon (and possibly Michael Darling?), to talk about Foresight's upcoming conference on AGI and nanotech where I will be speaking on anthropomorphism in AGI. The infamous Ralph Merkle will be a guest as well. Tune in at:
10:00 Eastern/9:00 Central/8:00 Mountain/7:00 Pacific.
There will also be a chatroom where you can log in, comment on what we say, and ask questions. Listen live at Blog Talk Radio.
A Short Introduction to Coherent Extrapolated Volition (CEV)
In 2004, Eliezer Yudkowsky of the Singularity Institute presented Coherent Extrapolated Volition (CEV) as a solution to the AI Friendliness Problem. The basic idea is to extrapolate the preferences of all humanity in such a way that we obtain an output that satisfices those preferences, then the CEV shuts down, its role finished. CEV is currently the most promising theory for building a Friendly AI.
A point I haven't seen advanced before outside this document, though it seems pretty obvious, is that any AI, to be of any use to humans whatsoever, must use some variation of volition to fulfill human directives. Volition is introduced as follows: there are two boxes, box A and box B. One of the boxes has a diamond. Fred wants the diamond, and asks us for box A. We want him to have the diamond. One problem: the diamond is in box B. The document points out the problem with handing Fred box A:
But I do not simply say: "Well, Fred chose box A, and he got box A, so I fail to see why there is a problem." There are several ways of stating my perceived problem:
1. Fred was disappointed on opening box A, and would have been happier on opening box B.
2. It is possible to predict that if Fred chooses box A, Fred will look back and wish he had chosen box B instead; while if Fred chooses box B, Fred will be satisfied with his choice.
3. Fred wanted "the box containing the diamond", not "box A", and chose box A only because he guessed that box A contained the diamond.
4. If Fred had known the correct answer to the question of simple fact, "Which box contains the diamond?", Fred would have chosen box B.
Hence my intuitive sense that giving Fred box A, as he literally requested, is not actually helping Fred.
If you find a genie bottle that gives you three wishes, it's probably a good idea to seal the genie bottle in a locked safety box under your bed, unless the genie pays attention to your volition, not just your decision.
A powerful AI, or genie (big difference), must follow our volition, not just our direct decisions, or it would be dangerous. It is easy to imagine even worse failures based on interpreting the letter rather than the spirit of our requests -- for instance, a robot chauffeur designed to take one's children to school would be viewed as an idiotic or evil entity if it took children to school even if the school were on fire, or covered in two feet of snow. Just decisions are never enough -- an AI needs an interpretation of volition. I see some connection between the idea of volition and revealed preference -- people often say one thing, for social signaling purposes (often subconsciously), when they actually mean something else, which can sometimes be inferred from how they act, not what they say.
To me, the question is not whether we'll use some form of extrapolated volition to pilot and direct AGI, but what kind we choose to use. In his paper, Eliezer proposed the following:
In poetic terms, our coherent extrapolated volition is our wish if we knew more, thought faster, were more the people we wished we were, had grown up farther together; where the extrapolation converges rather than diverges, where our wishes cohere rather than interfere; extrapolated as we wish that extrapolated, interpreted as we wish that interpreted.
Phew! That's a mouthful. What does he mean by "cohere"? What about "growing up farther together"? (I think that should read "further" -- "farther" refers to physical distance.) How can we model growing up further together without actually modeling all 6 billion humans interacting socially? Not all these questions are answered in the document. (Some are.) I still regard it as a good starting point. It's superior to the prior idea that Eliezer had, which was to create an AI that is a "normative altruist" and uses various "anchors and shapers" to craft a "normative morality". CEV "cheats" by sucking the metamoral content out of the entire human race, like a gigantic infovorous vacuum machine.
The alternative to these sorts of extrapolation schemes all involve a programmer directly dictating the goal content of the AI in one way or another, which leaves you wide open to programmer-biased goal systems. Since the goal system of the first self-improving AI could quite plausibly dictate the fate of the universe from that point on, this is probably a bad idea. Other alternatives, like the one proposed by Bill Hibbard, involve direct feedback where humans essentially push buttons for what they like and the AI is eventually supposed to figure out moral philosophy. (Presumably.) The problem with this is that human metamorality is extremely complex and a system that absorbs the surface features without an eye for deep structure is destined to fail in stupid ways.
Humans can learn more or less what moral behavior is from other humans because much of our metamoral framework is already programmed in from an early age. When a child steals a plate full of cookies that are meant for after dinner, and a parent says, "don't do that!", unless the child is extremely young, he or she will generally know what they did wrong and why the adult has a problem with it. A poorly programmed AI, on the other hand, would have no metamoral framework. Was it wrong because cookies are inherently evil? Because the AI did not bake the cookies itself? Because AIs are not meant to have cookies? An AI might know all the facts about cookies and their historical context, but that still won't give it the background it needs to find out why taking the cookies was "wrong", and to what extent it was "wrong". If eating the cookies saved a life, it might not be wrong. What if eating a cookie saved a billion lives a billion years in the the future? A purely utilitarian AI might exterminate the human race today if it thought that doing so would create the greatest utility in the long term. AIs with hand-coded value systems may not have the "moral common sense" that humans do. Moral facts do not follow physical facts. In some cases, we are morally biased for meaningless reasons like small changes in the wording of a hypothetical moral dilemma, or other framing effects. How is an AI supposed to make heads or tails of "right" and "wrong"? Giving up is not a choice -- we need an AI we can trust with nuclear weapons or worse. More sophisticated extrapolations of revealed preferences seem to be the most sensible pathway.
The moral realists suppose that a sufficiently intelligent AI will figure out "right" and "wrong" because they are self-evident. This is suicide. Right and wrong are not objective things-in-the-world, but human constructions. Murder is not wrong because it's objectively wrong, but because human moral development over the course of thousands of years has decided that it is wrong most of the time. People worry about this interpretation of morality because they believe it's a slippery slope, but Joshua Greene's PhD thesis goes over all the reasons we might be afraid of moral anti-realism and shows that none of them are really compelling. Whether or not we consider moral anti-realism to be good for society, evolutionary psychology and cognitive science show us that it is true, whether we like it or not.
There is a lot of confusion around the idea of Coherent Extrapolated Volition, which I attribute mostly just to people commenting on the concept without reading the easily digestible 28-page document. People will comment on a concept for years without reading a short document actually explaining it. The way this works is that you read the first page, or less, then fill in the gaps with your imagination.
To dispel some of the worst misconceptions about CEV, here is a short list of "6 points about Coherent Extrapolated Volition" that was posted to the SL4 mailing list in July 2005:
1. Coherent Extrapolated Volition is not a majority vote. No human being is asked to actually decide anything.
2. The key word in "Coherent Extrapolated Volition" is "extrapolated". CEV does not use judgments produced by the sort of human beings that exist today.3. The CEV writes an AI. This AI may or may not work in any way remotely resembling a volition-extrapolator.
4. The CEV returns one coherent answer. The AI it returns may or may not display any given sort of coherence in how it treats different people, or create any given sort of coherent world.
5. The CEV runs for five minutes before producing an output. It is not meant to govern for centuries.
6. The CEV by itself does not mess around with your life. The CEV just decides which AI to replace itself with.
For a jumping-off point into one discussion about CEV, see this SL4 thread from Oct. 2008: "Just how coherent does CEV have to be?", which began with a question proposed by Alex Bokov. Kaj Sotala points out that the initial question is answered in the CEV document itself.
If you have any burning questions, check out the PAQ (Previously Asked Questions) portion of the CEV document first. For another very short summary of the CEV concept, see its Wikipedia entry.
New Lectures from Bostrom and Savulescu
Anders Sandberg directs us to two new lectures by Oxford philosophers.
"Global Catastrophic Risks" by Nick Bostrom
"Human Enhancement: Bioliberation or Biothreat?" by Julian Savulescu
Scroll down a bit to see the controls if you don't see them at first. The custom flash interface has some cool features, like simultaneously showing the slides and speaker. You can even click a button near the bottom to expand the slides or the speaker window.
In his talk, Savulescu mentions the cognitive enhancement value of iodine in salt. He says that about a billion IQ points are lost each year due to iodine deficiency. If you're a pregnant woman and you don't get iodine in your salt during pregnancy, your child loses about 10-15 IQ points. It would cost 2 cents per person per year to iodize salt. 4 billion people lack adequate iodine.
The Benefits of a Successful Singularity

Check out my new article at Good.is, the latest installment in a "Singularity 101" series I'm writing with Roko. I would be most pleased if you registered for the site and voted my article as "good".
Ray Solomonoff on Speed of AI Takeoff
In 1985, Ray Solomonoff offered his thoughts on six milestones in AI and the economic and technological growth that might be expected when generally intelligent AI is developed. The paper is called "The Time Scale of Artificial Intelligence: Reflections on Social Effects".
Here is the abstract:
Six future milestones in AI are discussed. These range from the development of a very general theory of problem solving to the creation of machines with capacities well beyond those of a single human. Estimates are made for when these milestones will occur, followed by some suggestions for the more effective utilization of the extremely rapid technological growth that is expected.
When I read lines like that last sentence, what I see nowadays is "extremely scary technological growth". Rapid growth is scary when that growth is controlled by systems that may not optimize reality in ways that we explicitly value. (See "The Future of Human Evolution" for an explanation.)
A select milestone:
Milestone C. A critical point in AI development would be a machine that could usefully work on the problem of self-improvement. Newell and Simon were not successful in their attempts to get their "General Problem Solver" to improve it's own methods of operation. While Lenat's "Eurisko" has been successful in several problem areas, he has not been able to get it to devise good heuristics for itself. He is, however, optimistic about the progress that has been made and is continuing this work.
Eurisko eventually led to the creation of Cyc, which appears to be of limited use.
It should be noted that AI "self-improvement" should be viewed as a special case of an AI's general talents for understanding an object, evaluating its purpose, and improving it with respect to that purpose. (Sometimes people make unwarranted distinctions between an AI modifying itself and modifying the world.)
How about some more milestones:
Milestone D. Another milestone will be a computer that can read almost any English text and incorporate most of the material into its data base just as a human does. It would have to store the information in a form that is useful for solving whatever kinds of problems it is normally given.
Since there is an enormous amount of information available in electronic data bases all over the world, a machine with useful access to this information could grow very rapidly in its ability to solve problems and in a real sense in its understanding of the world.Milestone E will be a machine that has a general problem solving capacity near that of a human, in the areas for which it has been designed -- presumably in mathematics, science and industrial applications.
Milestone F will be a machine with a capacity near that of the computer science community.Milestone G will be a machine with a capacity many times that of the computer science community.
Here's another bit from later on, analyzing the potential impact of Milestone G:
The last 100 years have seen the introduction of special and general relativity, automobiles, airplanes, quantum mechanics, large rockets and space travel, fission power, fusion bombs, lasers, and large digital computers. Any one of these might take a person years to appreciate and understand. Suppose that they had all been presented to mankind in a single year! This is the magnitude of "future shock" that we can expect from our AI expanded scientific community.
Scanning over the paper, it still seems like Solomonoff is thinking of AIs as tools or narrow scientists, rather than general agents with the full range of activity that humans have or beyond. In the end, Solomonoff seems to imply that one of the primary benefits of AI will be to allow us to predict and evaluate the future more effectively. But he points out that we will still have to make ethical choices.
H/t to Shane Legg for writing about the paper.
Ray Solomonoff, 1926-2009

Ray Solomonoff, the father of algorithmic probability theory and one of the founding fathers of Artificial Intelligence, died December 7th after a brief illness.
Solomonoff was a pioneer of probabilistic thinking in AI, and in general. It is my own view that the value of probabilistic thinking is the single most important insight about reality that humanity has ever had, and Solomonoff helped add to that great edifice with his idea of Algorithmic Probability.
Solomonoff was the founder of universal inductive inference, which gives a mathematically optimal method of predicting the next bit of sensory information in a sequence based on prior information. (Unfortunately, it is incomputable, though computable approximations have been used throughout the field of AI.) As far as I know, Solomonoff made the first mathematically rigorous attempt at automated sequence prediction.
Solomonoff's work is being carried forward by theorists such as Marcus Hutter, Juergen Schmidhuber, and Shane Legg, among many others.
Just last week I posted on AIXI, which is essentially a marriage between Solomonoff's universal inductive inference and decision theory. Inductive inference tells you what is going to happen next, while decision theory tells you what to do next. Put these together and you get a model for AI.
Solomonoff kept publishing and engaging with the AI community right up until his death. It seems very likely that, if and when strong AI is created, the designer will owe a great debt to Solomonoff's work. Let's honor his memory by becoming more familiar with his achievements and making sure that his ideas stay alive.