Tuesday, December 29, 2020
Your next purchase
Saturday, December 19, 2020
Quentin Smith
Friday, December 11, 2020
Quote of the Day
If they are, it might be supposed that their error is very harmless: men fail so often to repent their real sins that the occasional repentance of an imaginary sin might appear almost desirable. But what actually happens (I have watched it happening) to the youthful national penitent is a little more complicated than that. England is not a natural agent, but a civil society. When we speak of England's actions we mean the actions of the British Government. The young man who is called upon to repent of England's foreign policy is really being called upon to repent the acts of his neighbour; for a Foreign Secretary or a Cabinet Minister is certainly a neighbour. And repentance presupposes condemnation. The first and fatal charm of national repentance is, therefore, the encouragement it gives us to turn from the bitter task of repenting our own sins to the congenial one of bewailing -- but, first, of denouncing -- the conduct of others. If it were clear to the young that this is what he is doing, no doubt he would remember the law of charity. Unfortunately the very terms in which national repentance is recommended to him conceal its true nature. By a dangerous figure of speech, he calls the Government not 'they' but 'we'. And since, as penitents, we are not encouraged to be charitable to our own sins, nor to give ourselves the benefit of any doubt, a Government which is called 'we' is ipso facto placed beyond the sphere of charity or even of justice. You can say anything you please about it. You can indulge in the popular vice of detraction without restraint, and yet feel all the time that you are practising contrition. A group of such young penitents will say, 'Let us repent our national sins'; what they mean is, 'Let us attribute to our neighbour (even our Christian neighbour) in the Cabinet, whenever we disagree with him, every abominable motive that Satan can suggest to our fancy.'
Such an escape from personal repentance into that tempting region
Where passions have the privilege to work
And never hear the sound of their own names,
would be welcome to the moral cowardice of anyone. But it is doubly attractive to the young intellectual. When a man over forty tries to repent the sins of England to love her enemies, he is attempting something costly; for he was brought up to certain patriotic sentiments which cannot be mortified without a struggle. But an educated man who is now in his twenties usually has no such sentiment to mortify. In art, in literature, in politics, he has been, ever since he can remember, one of an angry and restless minority; he has drunk in almost with his mother's milk a distrust of English statesmen and a contempt for the manners, pleasures, and enthusiasms of his less-educated fellow countrymen. All Christians know that they must forgive their enemies. But 'my enemy' primarily means the man whom I am really tempted to hate and traduce. If you listen to the young Christian intellectuals talking, you will soon find out who their real enemy is. He seems to have two names -- Colonel Blimp and 'the business-man'. I suspect that the latter usually means the speaker's father, but that is speculation. What is certain is that in asking such people to forgive the Germans and Russians and to open their eyes to the sins of England, you are asking them, not to mortify, but to indulge, their ruling passion. I do not mean that what you are asking them is not right and necessary in itself; we must forgive all our enemies or be damned. But it is emphatically not the exhortation which your audience needs. The communal sins which they should be told to repent are those of their own age and class -- its contempt for the uneducated, its readiness to suspect evil, its self-righteous provocations of public obloquy, its breaches of the Fifth Commandment. Of these sins I have heard nothing among them. Till I do, I must think their candour towards the national enemy a rather inexpensive virtue. If a man cannot forgive the Colonel Blimp next door whom he has seen, how shall he forgive the Dictators whom he hath not seen?
C.S. Lewis
"Dangers of National Repentance"
In God in the Dock: Essays on Theology and Ethics
Wednesday, December 2, 2020
Right to left, left to right
Monday, November 30, 2020
Monday, November 23, 2020
When both sides accuse the other of a coup d'état
Sunday, November 22, 2020
The Knowledge Argument
Anyhoo, one day Mary is sitting underneath a tree reading a book about Isaac Newton when an apple falls on her head and momentarily knocks her out. When she wakes up her monochromacy is gone: she can see the green grass, she can see purple mountain majesties, and she can see the clear blue sky. She had never seen these colors before. She had never known what "blue" looks like. But she knew everything that happened in the brain when someone experienced the color blue. So the question is: does Mary know something now that she didn't know before? This is the Knowledge Argument.
This isn't as easy to answer as you might think. I've been asking my students this for years and it's usually a split vote. One point to make here is that knowing what blue looks like wouldn't be propositional knowledge, but does it count as knowledge then? Some people think it's obvious Mary knows something that she didn't know before (what blue looks like) and others think it's obvious she doesn't.
The issue here is about qualia (singular: qualium), the "what it's like" experiences. Thomas Nagel wrote an essay called "What Is It Like to Be a Bat?" which really brought this point home. Many philosophers of mind say that qualia are the heart and soul of the mind, and even human life in general. But the problem is that qualia can't be quantified and are effectively invisible to science. Science seeks to explain things from a third person perspective, but qualia are intrinsically first person in nature. Mary could describe color perception from a third person perspective but with no awareness of the qualium "what blue looks like". So the reason this is important is that, if Mary knows something after seeing the color blue that she did not know before, then there are important things -- foundational, fundamental things -- that science cannot address. If you had a complete physical, scientific description of the entire universe, it would be intrinsically incomplete, since it would not include qualia.
Moreover, the third person perspective is derived from the first person: to describe something from the third is to observe it from another standpoint, but ultimately this just means to observe it from what a first person perspective from that other standpoint would be. There can be no (to reference another Nagel work) view from nowhere. So science is utterly dependent on the first person perspective, and thus qualia, but cannot address them.
Naturally, all this is controversial. Some philosophers of mind, like Daniel Dennett, deny the reality of qualia. The philosopher who came up with the Knowledge Argument, Frank Jackson, eventually changed his mind about it because of the implications it had, viz., that there is more to reality than the physical world. Jaegwon Kim, who gives Nagel a run for his money as the greatest living philosopher in my opinion, fully accepts the reality of qualia and their centrality in human life, but still defends physicalism: see his books Mind in a Physical World and Physicalism, or Something Near Enough. And there's a collection of some of the most important essays about the Knowledge Argument which has the unfortunate title There's Something about Mary. So now you know what to read during the quarantine.
Wednesday, November 18, 2020
Quote of the Day
"... satisfide
A lonesome mortall God t' have died."
Sunday, November 15, 2020
Recycle
My posts on space science here are not consistent. I wrote a bit ago about a spacecraft that was going to momentarily touch down on a freaking asteroid, gather some stuff up, and then return to Earth. Then it actually did so, got more stuff than it was anticipating, everything's going great, and I didn't post about it. Not to mention the claims that they found some chemicals in Venus's atmosphere that, in our experience, are only produced by life, although it's possible for them to be produced by other processes. Didn't post on it. You'll notice I'm not providing links to those stories either. That's because it would have required effort on my part.
Saturday, November 7, 2020
Some more recent acquisitions
William P. Alston, A Realist Conception of Truth.
---, The Reliability of Sense Perception.
Robert Audi, The Architecture of Reason: The Structure and Substance of Rationality.
Owen Barfield, Poetic Diction: A Study in Meaning.
Michael Bergmann, Justification without Awareness: A Defense of Epistemic Externalism.
Edwyn Bevan, Symbolism and Belief.
Roderick M. Chisholm, The Foundations of Knowing.
Paul Copan, ed., Will the Real Jesus Please Stand Up? A Debate between William Lane Craig and John Dominic Crossan.
Daniel C. Dennett, From Bacteria to Bach and Back: The Evolution of Minds.
Alvin I. Goldman, Epistemology and Cognition.
George S. Pappas and Marshall Swain, eds., Essays on Knowledge and Justification.
Ernest Sosa, Epistemology.
Ernest Sosa and Jaegwon Kim, eds., Epistemology: An Anthology (1st edition).
Barry Stroud, Hume.
Peter Unger, Philosophical Papers, vol. 1.
---, Philosophical Papers, vol. 2.
Dallas Willard, The Great Omission: Reclaiming Jesus' Essential Teachings on Discipleship.
Charles Williams, The Descent of the Dove: A Short History of the Holy Spirit in the Church.
Fiction:
Italo Calvino, The Complete Cosmicomics.
Tony Daniel, The Robot's Twilight Companion.
Jack Dann, ed., Wandering Stars: An Anthology of Jewish Fantasy and Science Fiction.
Philip José Farmer, Night of Light.
Walter M. Miller, Jr., Conditionally Human.
---, The View from the Stars.
Kim Stanley Robinson, The Martians.
---, Galileo's Dream.
---, The Best of Kim Stanley Robinson.
Cordwainer Smith, The Rediscovery of Man.
Robert Charles Wilson, Spin.
Thursday, November 5, 2020
Oy vey
Situation 1: Say the Trumpfolk are right and the Bidenkin are trying to steal the election. Honestly, I take it for granted that there are a lot of nefarious machinations behind the scenes like this. And while I'm not a Republican, I have noticed that when there's a close race and the Republican is slightly ahead, they often find a secret cache of votes that go disproportionately to the Democrat. I think it's generally accepted that the Democrats stole the 1960 Presidential election. In my own neck of the woods, Chris Dudley was ahead by about 30,000 votes in the 2010 race for Governor in Oregon, and then overnight they found more votes that made him 30,000 votes behind. In the 2008 Senate election in Minnesota, Al Franken was behind in the votes, although it was really close. As they recounted, they kept finding ways to include or exclude votes, and it just happened to skew to Franken until, ultimately, Franken was declared the winner. I'm not saying it never goes the other way, it's just what I've noticed.
So anyway, I don't think it's outrageous to suggest that's what's happening now. If so, then there's no way that Trump, being Trump, is going to let it go. I suspect a lot of the Trumpfolk wouldn't accept it, even it went to the Supreme Court and they found for Biden. Really, if the Bidenkin are trying to steal the election, then the Trumpfolk shouldn't accept the results. But I don't think the Bidenkin would let it go either. For them to let it go would be to tacitly admit that they cheated and tried to steal a Presidential election. They're not going to do that, they would lose authority and power for good. So if the Bidenkin really are cheating, neither side can back down under any circumstances.
Situation 2: OK, now say that they're not cheating, or at least their cheatings aren't consequential enough to change the election results. In this case, the Bidenkin wouldn't let it go for the same reason: it would be a tacit admission that they cheated. It's even worse here though, because it would have the same effects (a permanent loss of authority and power) but it wouldn't even be true. They wouldn't and shouldn't give in if this is the case.
Could Trump let it go? Well, I guess he could, but, y'know, Trump. He won't. I wouldn't trust him to let it go even if he came to genuinely realize that he legitimately lost (although I don't think he's unique in that regard). But there's more to it. If he let it go it would be a loss of prestige and authority for him. He could run again in 2024, but I think it would closer to a Teddy Roosevelt in 1912 scenario than a Grover Cleveland in 1892 one. So Trump wouldn't let it go. What about the movement that he represents? I'm not sure if they would lose power and prestige, but I don't think they would be willing to let it go either. Trump is their avatar.
So that's why I'm concerned. If the Bidenkin cheated, there's no way either side would back down. If they didn't cheat, there's no way either side would back down. I think Civil War 2.0 is starting, folks. But I really, really hope I'm wrong. The good news is that me being wrong is much more likely.
Update (Nov. 30): This article by a pollster sums up the reasons why people are claiming the election looks like it was rigged.
Sunday, November 1, 2020
The Lucas-Penrose Argument
In the early 20th century, it was thought that mathematics could be made into a complete formal system. This is a system in which every element has a complete definition, every entailment is deductive (so that conclusions necessarily follow from premises), and which contains no contradictions. But some basic concepts are unformalizable. "Truth," for example, allows us to form the Liar Paradox: "This statement is not true." If it's true, then it's false, and if it's false, it's true. So no formal system can have a truth predicate in it. (This isn't a mark against truth, btw.) One motive for this is a system with a contradiction leads to the principle of explosion, since ex falso quodlibet -- from a contradiction, everything follows.
Anyhoo, Kurt Gödel, inarguably the greatest logician of the 20th century, suggested we use a concept in place of truth that IS formalizable and doesn't lead to a paradox: provability. "This statement is not provable" doesn't lead to a problem like the Liar Paradox. But since such a statement can be made within any formal system, and since any such system must involve deductive provability, it follows that there can be no complete formal system. This is the intuition behind Gödel's Incompleteness Theorems. We'd been chasing a mirage.
This was around 1930. About the same time we had huge strides made in artificial intelligence by the likes of Alan Turing, Alonzo Church, etc. Turing came up with the idea of a Turing machine, which is an instantiation of a formal system, the cause-and-effect processes of the machine standing in for the deductive ground-consequent relations of the formal system. But since any formal system will have a statement within it to the effect of "This statement is not provable within this system" (called a Gödel sentence), such would also have to be the case for a Turing machine.
This is a problem because a Turing machine can only affirm provable claims, so any given machine will have a Gödel sentence which it cannot affirm. Human minds, however, have no such limitation: we can see that there is a Gödel sentence within our own systems of thought and affirm it, recognizing that it is correct. It is correct that "This statement is not provable within this system" is not provable within that system. This has two consequences: 1) Human minds cannot be reduced to Turing machines. They cannot be fully explained by the mechanistic cause-and-effect processes that are going on in the brain. There is an element of the mind that goes beyond it, and this element is truth-conducive. 2) Turing machines, and artificial intelligence in general, cannot fully duplicate the processes of human minds. They may be able to duplicate the end-products, but they can't produce them the same way that human minds do: through non-deductive (non-formal) reasoning. They can only do it via mechanistic cause-and-effect processes which don't have to be truth-conducive in order to arrive at those end-products.
This conclusion was reached by Gödel himself in his 1951 Gibbs Lecture, "Some Basic Theorems on the Foundations of Mathematics and Their Implications", but it wasn't published until the third volume of his Collected Works came out in 1995. J.R. Lucas -- who in writing this post I have learned passed away earlier this year, which devastates me -- however, wrote an enormously influential essay in 1961, "Minds, Machines, and Gödel" which presented the same idea. It motivated a lot of objections which Lucas responded to in philosophy journals, and then he published his book "The Freedom of the Will" in 1970, the last third of which is on the implication of Gödel's Incompleteness Theorems for the mind and AI. You can read most of his essays online at https://web.archive.org/web/20160718073705/http://users.ox.ac.uk/~jrlucas/. Later, mathematical physicist Roger Penrose defended the argument in his own way in his books The Emperor's New Mind and Shadows of the Mind.
Simple, no?
Monday, October 19, 2020
Quote of the Day
P.V.N Myers
A General History for Colleges and High Schools (1889)
Jim's comments: This is a clear and widely-read statement of the flat earth myth -- the idea that, prior to Columbus, people (or at least Europeans) thought the earth was flat on religious grounds. It's false: the sphericity of the earth had been the almost universal view in Europe for two millennia by the time we get to Columbus. Perhaps we can give Myers some grace since the flat earth myth was very common at the time. I wrote about it before here. The best book on it is Jeffery Burton Russell's Inventing the Flat Earth: Columbus and Modern Historians. Another interesting book is Christine Garwood's Flat Earth: The History of an Infamous Idea, although only the first chapter is on the flat earth myth, with the rest on the flat earth movement in the 19th and 20th centuries.
Tuesday, October 13, 2020
Metallic rules
The Golden Rule: Do unto others as you would have them do unto you -- treat people the way you want to be treated.
The Silver Rule: Don't do unto others as you would not have them do unto you -- don't treat people the way you don't want to be treated.
The Platinum Rule: Do unto others as they would be done by -- treat people the way they want to be treated, not the way you want to be treated.
The Brass Rule: Do unto others as they have done unto you -- treat people the way they treat you.
The Iron Rule: Do unto others before they do unto you -- might makes right.
Recognizing the wisdom of the Golden Rule is perhaps the most important early stage in civilization because it implies that we see others as similar to ourselves and that we see ourselves as deserving no treatment that is better than what others get (although we would generally prefer it -- we're not saints). However, the Golden Rule may not be the ultimate rule to live by because (as we discuss further in Chapter 11) others may not want to be treated as you'd like to be treated. Then, according to some thinkers, the "Platinum Rule" ought to kick in: Treat others as they want to be treated! Proponents of the Golden Rule say that this takes the universal appeal out of the rule. The spark of moral genius in the rule is precisely that we are similar in our human nature -- not that we would all like to have things our way.
This raises another issue: a lot of people don't view these rules as rules for themselves but as rules for others. When they say "do unto others as you would have them do unto you" what they mean is "do unto me as you would have me do unto you." The Golden and Silver Rules, however, give us a reason to apply them to ourselves, although we can ignore it: why should people treat me well (or at least not treat me badly)? Because they would want me to treat them well (or would not want me to treat them badly). But then this immediately brings up the self-application of these rules, that we should treat other people well, not just expect others to treat us well. They trigger us to apply the rules to ourselves. The Platinum Rule does not. If we apply it to others, by telling people to treat us how we want to be treated, it just means we want to have things our way. There's no motive to apply it to ourselves. And even if we do, we do it blindly, without any reason or justification for it.