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Moravec's paradox - Wikipedia
Moravec's paradox is the discovery by artificial intelligence and robotics researchers that, contrary to traditional assumptions, high-level reasoning requires very little computation, but low-level sensorimotor skills require enormous computational resources. The principle was articulated by Hans Moravec, Rodney Brooks, Marvin Minsky and others in the 1980s. As Moravec writes, "it is comparatively easy to make computers exhibit adult level performance on intelligence tests or playing checkers, and difficult or impossible to give them the skills of a one-year-old when it comes to perception and mobility".[1]

Similarly, Minsky emphasized that the most difficult human skills to reverse engineer are those that are unconscious. "In general, we're least aware of what our minds do best", he wrote, and added "we're more aware of simple processes that don't work well than of complex ones that work flawlessly".[2]


One possible explanation of the paradox, offered by Moravec, is based on evolution. All human skills are implemented biologically, using machinery designed by the process of natural selection. In the course of their evolution, natural selection has tended to preserve design improvements and optimizations. The older a skill is, the more time natural selection has had to improve the design. Abstract thought developed only very recently, and consequently, we should not expect its implementation to be particularly efficient.

As Moravec writes:

Encoded in the large, highly evolved sensory and motor portions of the human brain is a billion years of experience about the nature of the world and how to survive in it. The deliberate process we call reasoning is, I believe, the thinnest veneer of human thought, effective only because it is supported by this much older and much more powerful, though usually unconscious, sensorimotor knowledge. We are all prodigious olympians in perceptual and motor areas, so good that we make the difficult look easy. Abstract thought, though, is a new trick, perhaps less than 100 thousand years old. We have not yet mastered it. It is not all that intrinsically difficult; it just seems so when we do it.[3]

A compact way to express this argument would be:

- We should expect the difficulty of reverse-engineering any human skill to be roughly proportional to the amount of time that skill has been evolving in animals.
- The oldest human skills are largely unconscious and so appear to us to be effortless.
- Therefore, we should expect skills that appear effortless to be difficult to reverse-engineer, but skills that require effort may not necessarily be difficult to engineer at all.
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june 2018 by nhaliday
Eliminative materialism - Wikipedia
Eliminative materialism (also called eliminativism) is the claim that people's common-sense understanding of the mind (or folk psychology) is false and that certain classes of mental states that most people believe in do not exist.[1] It is a materialist position in the philosophy of mind. Some supporters of eliminativism argue that no coherent neural basis will be found for many everyday psychological concepts such as belief or desire, since they are poorly defined. Rather, they argue that psychological concepts of behaviour and experience should be judged by how well they reduce to the biological level.[2] Other versions entail the non-existence of conscious mental states such as pain and visual perceptions.[3]

Eliminativism about a class of entities is the view that that class of entities does not exist.[4] For example, materialism tends to be eliminativist about the soul; modern chemists are eliminativist about phlogiston; and modern physicists are eliminativist about the existence of luminiferous aether. Eliminative materialism is the relatively new (1960s–1970s) idea that certain classes of mental entities that common sense takes for granted, such as beliefs, desires, and the subjective sensation of pain, do not exist.[5][6] The most common versions are eliminativism about propositional attitudes, as expressed by Paul and Patricia Churchland,[7] and eliminativism about qualia (subjective interpretations about particular instances of subjective experience), as expressed by Daniel Dennett and Georges Rey.[3] These philosophers often appeal to an introspection illusion.

In the context of materialist understandings of psychology, eliminativism stands in opposition to reductive materialism which argues that mental states as conventionally understood do exist, and that they directly correspond to the physical state of the nervous system.[8][need quotation to verify] An intermediate position is revisionary materialism, which will often argue that the mental state in question will prove to be somewhat reducible to physical phenomena—with some changes needed to the common sense concept.

Since eliminative materialism claims that future research will fail to find a neuronal basis for various mental phenomena, it must necessarily wait for science to progress further. One might question the position on these grounds, but other philosophers like Churchland argue that eliminativism is often necessary in order to open the minds of thinkers to new evidence and better explanations.[8]
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april 2018 by nhaliday
"Really six people present": origin of phrase commonly attributed to William James - English Language & Usage Stack Exchange
Whenever two people meet, there are really six people present. There is each man as he sees himself, each man as the other person sees him, and each man as he really is.


Here's a graph of the number of references of the phrase "really six people present" Click on the first range (1800-1017) and you'll see this, which attributes this statement to Oliver Wendell Holmes. What's perhaps relevant is the reference to "John and James"--I'm guessing two placeholder names.
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march 2018 by nhaliday
[1410.0369] The Universe of Minds
kinda dumb, don't think this guy is anywhere close to legit (e.g., he claims set of mind designs is countable, but gives no actual reason to believe that)
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march 2018 by nhaliday
Blind men and an elephant - Wikipedia
A group of blind men heard that a strange animal, called an elephant, had been brought to the town, but none of them were aware of its shape and form. Out of curiosity, they said: "We must inspect and know it by touch, of which we are capable". So, they sought it out, and when they found it they groped about it. In the case of the first person, whose hand landed on the trunk, said "This being is like a thick snake". For another one whose hand reached its ear, it seemed like a kind of fan. As for another person, whose hand was upon its leg, said, the elephant is a pillar like a tree-trunk. The blind man who placed his hand upon its side said, "elephant is a wall". Another who felt its tail, described it as a rope. The last felt its tusk, stating the elephant is that which is hard, smooth and like a spear.
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august 2017 by nhaliday
Gnosticism - Wikipedia

Faith and other Epistemic Categories:
In response to Bonald’s excellent little piece Faith is honesty in doubt, I wanted to offer a parallel thesis (or, if you like, a friendly amendment): faith is a matter of whom, not what.

I can have faith in a man (I believe him). Maybe I have faith in him in a general sense, or maybe I have only heard him recite one particular narrative (in which case when I say I believe him I mean I have faith in that particular narrative). I can also have faith in groups and communities, and in their reports, publications, traditions, in the names they put forward as trustworthy authorities on certain questions, and so on.

Faith (or belief) is a matter of trust; fundamentally it is your confidence in the man that makes you confident his words will ring true. (Indeed, confidence is a Latin word meaning with faith.)

You can trust a man, or a group; you can always trust every word that comes out of his mouth, or just in one incident; you can trust him on account of his honesty, his accuracy, or both; you can trust him absolutely or only casually; but wherever you say you trust, the question whom it is that you trust arises. You can’t trust things, states of affairs, trees…


As Christians, we believe Christ and his Apostles. When Mr. Smith tells us something that conflicts with our Christian creed, we withhold our assent from Mr. Smith’s claims because we have greater faith in Christ than in Mr. Smith. If later on Mr. Thompson tells us something that conflicts with some other rumor we heard from Mr. Smith, this conflict will cause us to experience some uncertainty and confusion; but we will have a much more vivid understanding of what is going on if we have recently had some reason to reflect on Mr. Smith and how much (or how little) we trust him.


Perhaps we could say that this is the difference between faith and conviction. Conviction refers to something that you have been convinced is true (and only implicitly, if at all, to those who convinced you), whereas faith refers to someone you trust (and only implicitly to opinions you hold as a result of this trust). To restate a point using this new conceptual contrast: everyone has convictions, but a Christian has faith as well.

Faith and Gullibility:
But Chesterton’s point is in a certain sense a petty one to score: which of the trendy superstitions in circulation today is half as trendy as barren, godless materialism?

The vulgar errors of the plebs have actually become part of the metabolism of our godless society. As the Cathedral and its choirboys have gradually improved message-discipline on science and superstition (yes, they “freaking love science”), the contrast between the amusingly rustic ignorance of the commoners and the smug confidence of the overclass has become part of the status-structure that draws ambitious youngsters into the Cathedral’s cold embrace. Abandoning the poor to the torment of demons is now part of the Left’s plan; more room to tut-tut and demonstrate that you are a reasonable bugman, more misery to justify the next stage in the revolution.

But still, this fails to get at the root of the fairies and the séances and the horoscopes, which is neither faith’s relation to superstition, nor to the arrogance of those who lift themselves up above the superstitions they despise in others, but rather faith’s relation to gullibility.

Gullibility is a more general concept than superstition. Let us define superstition as gullibility with respect to opinions and possibilities that are held in contempt by the powerful, while gullibility itself is the epistemic equivalent of pettiness — an inability to dismiss highly improbable hypotheses.


Not because of any special piety or zeal, but simply because it was barely yesterday that I was an atheist, I had a vivid impression of the changes in my thinking process. It was not impossible that supernatural agency was involved, of course, but it was very implausible — because it seemed too trivial and indistinct to be worth the effort of a self-respecting angel. So I set that aside immediately, and stayed focused on thinking about what might actually be going on.

Putting aside the insignificant possibility lightened my mind almost in the way pouring water out of a jug would. I seem to remember that when I was an atheist confronting this type of “superstition”, I would keep the supernatural hypothesis in front of my mind, regulating my thoughts, considering the case from every angle but only from the perspective of what might disprove the superstitious opinion.

But a superstition is the opinion of a crackpot. Why was I worried about what crackpots believe? If Eddington has a hypothesis or Einstein has a hypothesis, then falsifying the hypothesis is science. Falsifying a crackpot’s hypothesis is proof that you place a low value on your time.


Here is another possibility: I don’t know why the appliance turns on when it does. I wasn’t able to figure it out. It would be odd if I could, since I’m not an electrician or an engineer. The world would be a boring place if you could just suss out the answer to arbitrarily unusual questions without making any special study of the topic. Sometimes we don’t know. And often when we don’t know we don’t care. In fact, most of the time we don’t care about what we don’t know precisely because the insignificance of the topic is the very reason we never prepared ourselves to answer that type of question in the first place.
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july 2017 by nhaliday
William James - Wikipedia
- Barzun really likes this guy
- The Varieties of Religion Experience has also gotten a mention a few times
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july 2017 by nhaliday
Shtetl-Optimized » Blog Archive » Why I Am Not An Integrated Information Theorist (or, The Unconscious Expander)
In my opinion, how to construct a theory that tells us which physical systems are conscious and which aren’t—giving answers that agree with “common sense” whenever the latter renders a verdict—is one of the deepest, most fascinating problems in all of science. Since I don’t know a standard name for the problem, I hereby call it the Pretty-Hard Problem of Consciousness. Unlike with the Hard Hard Problem, I don’t know of any philosophical reason why the Pretty-Hard Problem should be inherently unsolvable; but on the other hand, humans seem nowhere close to solving it (if we had solved it, then we could reduce the abortion, animal rights, and strong AI debates to “gentlemen, let us calculate!”).

Now, I regard IIT as a serious, honorable attempt to grapple with the Pretty-Hard Problem of Consciousness: something concrete enough to move the discussion forward. But I also regard IIT as a failed attempt on the problem. And I wish people would recognize its failure, learn from it, and move on.

In my view, IIT fails to solve the Pretty-Hard Problem because it unavoidably predicts vast amounts of consciousness in physical systems that no sane person would regard as particularly “conscious” at all: indeed, systems that do nothing but apply a low-density parity-check code, or other simple transformations of their input data. Moreover, IIT predicts not merely that these systems are “slightly” conscious (which would be fine), but that they can be unboundedly more conscious than humans are.

To justify that claim, I first need to define Φ. Strikingly, despite the large literature about Φ, I had a hard time finding a clear mathematical definition of it—one that not only listed formulas but fully defined the structures that the formulas were talking about. Complicating matters further, there are several competing definitions of Φ in the literature, including ΦDM (discrete memoryless), ΦE (empirical), and ΦAR (autoregressive), which apply in different contexts (e.g., some take time evolution into account and others don’t). Nevertheless, I think I can define Φ in a way that will make sense to theoretical computer scientists. And crucially, the broad point I want to make about Φ won’t depend much on the details of its formalization anyway.

We consider a discrete system in a state x=(x1,…,xn)∈Sn, where S is a finite alphabet (the simplest case is S={0,1}). We imagine that the system evolves via an “updating function” f:Sn→Sn. Then the question that interests us is whether the xi‘s can be partitioned into two sets A and B, of roughly comparable size, such that the updates to the variables in A don’t depend very much on the variables in B and vice versa. If such a partition exists, then we say that the computation of f does not involve “global integration of information,” which on Tononi’s theory is a defining aspect of consciousness.
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january 2017 by nhaliday

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