Archive for the ‘Philosophy’ Category

In Defense of Meta-Ignorance (sort of)

Wednesday, January 9th, 2008

I wrote my last post about a phenomenon I dubbed ‘Meta-Ignorance’ – being unaware of exactly how much you don’t know. I called it a serious problem and suggested that everyone become aware of just how ignorant they are.  I  think now that should be a warning – challenging your meta-ignorance can be a really depressing process.  I spent the last semester of graduate school paralyzed by the realization of everything that I didn’t know.  New topics that I learned became gaping black holes of unknown facts, into which endless hours of study  could be poured without any hope of obtaining mastery.  I recalled a saying from one of my undergrad professors: “As my island of knowledge grows, so does my perimeter of ignorance. ”

Confidence is a tricky thing. If you have too much of it, you run the risk of making foolish mistakes. If you don’t have enough, you’ll never accomplish anything.  It’s tough to remain confident in the face of overwhelming ignorance, but I’m working on it. Personal growth for the win.

In Defense of Ignorance

Sunday, September 30th, 2007

We live in a culture that hates ignorance. We are told to educate ourselves about Darfur, Global Warming, Fossil Fuels, Stem Cells, and every other issue of the day. This is absolutely terrible advice, and probably causes far more harm than good.

The volume of knowledge produced by western civilization in the past hundred years alone is simply astonishing. No person could possibly be expected to be aware of it all, much less understand or comprehend it. Even in a single field, like mathematics, it’s impossible for one person to understand everything. Take an expert topologist and a smart undergrad, and put them both through a class on number theory. It’s a tossup on who’ll do better. Hell, I’d probably bet on the undergrad, because there’s a chance she’s actually interested in number theory. Is the topologist ignorant of number theory? Yes. Is this a bad thing? I certainly don’t think so. No reasonable mathematician would look down upon the topologist for not knowing much about an area in which she isn’t trained. She would certainly be criticized, however, if she presented herself as understanding number theory even though she didn’t. Among mathematicians, Ignorance is fine, as long as you’re aware that you’re ignorant and don’t try to disguise the fact.

Unfortunately, our culture doesn’t adhere to the same standard as mathematicians; Ignorance is roundly criticized as a ‘bad’ thing, to be ‘fought’ with ‘knowledge.’ Global Warming is a perfect example. Ask anyone whether the earth is getting warmer, and they’ve probably got an answer for you. Do they understand what they’re really saying? Not a chance in hell, unless they’ve done serious study in thermodynamics, statistical mechanics, and climatology. That certainly doesn’t stop people from forming opinions about subjects that they fundamentally don’t understand. It doesn’t really matter if people spout nonsense about number theory (although it might bother the number theorists.) But when people start forming opinions and voting based upon science that they fundamentally don’t understand, bad things happen. If global warming is really a problem, all the people who are convinced that it isn’t are standing in the way of fixing it. If global warming isn’t a problem, all the people who claim that it is are poised to inflict serious damage to the economy.

I’m not saying that Global Warming isn’t happening – I’m saying I’m not qualified to answer that question, and neither is 99.9% of the population. Unfortunately, it seems like many people who aren’t qualified to answer the question have decided to so. Take a stand for ignorance – accept that you understand very little of the world outside your area of expertise, and be proud of this! I’d much rather live in a culture of ignorant people who are aware of their ignorance than a culture of ignorant people who consider themselves to be educated.

On Morality and Career Choices (Redux)

Saturday, September 8th, 2007

I wrote a post on the morality of different career choices, and got a lot of responses. I was trying to come up with a reasonable metric of measuring the extent to which someone increased the overall amount of hapiness in the world. The idea was to compute a delta function – how much less happy would everyone be if this person didn’t exist?

Many readers, both here and on facebook, astutely pointed out a lot of problems in my analysis. I gave it a lot more thought, and concluded that ‘how much is person X helping the world?’ is really a meaningless question. In order to answer the question, you’d have to be able to say ‘what would happen’ if person X wasn’t engaged in their career of choice. To do that, you’d have to have an accurate analytical model of the entire world. Nobody’s got one of those.

If you can’t answer the question “how much am I realy helping the world,” how can you decide upon a career that helps the world out the most? I’ve concluded that this is really a meaningless goal. The best metric you have of happiness is your own – if something makes you happy, go for it. If it doesn’t make you happy, then you should maybe try to find something else. If you’re strictly logical about it, you can’t really answer questions about what kind of ‘difference’ you are making in the world, so you might as well not bother. Questions like ‘what if everybody acted this way’ become really meaningless when you think intensively about what they mean.

Am I advocating selfishness? Perhaps. I think people are usually hardwired to enjoy helping others. I know I feel great any time I help a stranger, even if it’s something simple like holding the door open for someone with a lot of baggage, or helping someone carry a peice of furniture to their apartment. I generally do these things instinctively, not becuase I’m some kind of ‘good person,’ but because I know I’ll feel good afterwards. I think people who are selfish and never help others are they way becuase they’ve never really experienced the rush of helping someone who needed it. I don’t volunteer in soup kitches because I don’t think I’d enjoy it. Some people do – if so, well hey, more power to you. I’m happy making the world of my experience a little better in small ways.

In summary, if you want to make the world a ‘better place’, just go out and do whatever the hell you want to do. You’ll make it a better place for you, at least. If you live in a community of people who share similar desires, you’ll make it a better place for the rest of your community as well. Once you start to ask questions about making the world as a whole better, you run into some serious logical problems. As with amost anything interesting, our logical faculties just aren’t equppied to answer questions like “How can I best serve the world?”

On Freedom

Saturday, August 25th, 2007

I don’t know as much as I ought to about the Greco-Persian wars, but the tiny nugget of understanding I have is as follows: The Greeks were a collection of squabbling city states all controlled independently. They spent most of their time farming and discussing philosophy; when they weren’t doing that, they were fighting each other. Persia was a rapidly growing empire controlled by one king and his appointed cronies, financed by treasure taken from conquered nations. The Persians, first under Darius, and then Xerxes, were trying to expand their empire by adding Greece. The Greeks didn’t realy care for this idea.

Xerxes, the Persian emperor, doesn’t really want to fight a long protracted battle to control the Greeks. He’d much rather have them submit to him like the rest of the peoples he’s had his army conquer. He sends out a bunch of messengers to Greeks, telling them they should surrender to him. “I’ll treat you well,” he says, “Just pay taxes to me and do whatever I say, and we’ll be good.” The Greeks, not really famous for their hospitality, respond by throwing the Persian messengers down a well.

Everything started to go pretty poorly for the greeks around this time; a variety of bad omens were observed. It was decided that maybe they shouldn’t have thrown those Persians down the well after all. The greeks figured they should offer some of their own men to make up for the Persians they killed. A call goes out for patriotic young men to sacrifice themselves for their country, and two guys step forward – Sperthias and Bulis. These aren’t just random joes; they’re from well off families. Think of two frat boys at Duke.

Sperthias and Bulis make their way to the persian capital. Everybody in Persia knows what these guys are doing, and they’re respected for it. A Persian Official, Hydarnes, gives them a place to stay. He’s impressed by their conviction and courage. He tries to convince them to join the Persians. “You guys are brave,” he says. “Xerxes knows how to reward brave guys. If you join him, you could be in charge of Greece.”

Their response to Hydarnes gives me shivers each time I read it:

“Hydames, you have not equally weighed each side in your advice to us. For you have tried the one which you advise, the other has remained untried by you. You know what it means to be a slave, but you have never yet tried freedom, to know whether it is sweet or not. For if you had tried it, you would have advised us to fight for it, not merely with spears, but also with axes.”

Can you imagine anyone with that attitude now? Recently, Iran (modern Persia) captured a bunch of British Marines. Instead of fighting to their deaths, the Marines simply acquiesed to the Iranians and went willingly as prisoners. They posed for a bunch of propoganda pictures, and were eventually released.  Watching the whole episdoe disgusted. me I have nothing but contempt for those who would let themselves be used in such a way, for ‘men’ who value their wretched lives over all else. That seems to make me a minority.

Sperthias and Bulis argued that Hydarnes counciled against fighting for freedom because he didn’t understand what freedom was like. We live in a world freedom is the only thing many people have known, and for that reason, they don’t really value it. Like the Persian satrap Hydarnes, they argue against fighting for freedom. Not because they don’t know what it’s like to be free, but because they don’t know what it’s like to be a slave. They’d rather be alive than free. I think that’s a damn shame.

On Assholes And Capitalism

Monday, July 2nd, 2007

In my experienece, most people have little to no understanding of capitalism. They think it encourages greed, and they are completely wrong in that belief. Unfortunately, it’s not just critics of capitalism that think this – I’ve met many defenders of capitalism who have the attitude that greed is good. Greedy people are assholes, and if the world were rid of them, it’d be a lovely place. I think it’s absurd to even debate that. Unfortunately, many defenders of free markets try to do just that. They don’t really understand why the thing they’re defending is worth defending; they just know that the alternative is worse. The fact that many defenders of capitalism try to defend greed probably causes many intelligent, well meaning people to become socialists. This reaction, is, of course, based upon a logical fallacy – a poor argument in support of an idea says nothing about whether the idea itself is poor. The principles underlying free-market capitalism aren’t based upon the idea that greedy people are good, they’re based upon the idea that greedy people are greedy.

Consider a simple story. I frequently start political or philsophical discussions over meals, I suppose because I enjoy harangueing people with my ideas, and I usually eat in some sort of group if I can. Suppose we are eating at a fast food restaurant, and we have finished our meal. Most fast food places provide garabge cans, and bins for used trays. When customers finish eating, they usually take their trays, empty them in the trash, and stack them in the bins. Some people just leave their trash at the table. In any case, the restaurant will pay people to clean up the restaurant, to make sure it looks nice. A nice restaurant is more enjoyable for everybody than a dirty restaurant. The owners of restaurant pay people to clean it up because they want to entice customers into their restaurant. They are motivated by greed. Their greed, coupled with the mechanism of capitalism, ensures that there will be somebody to clean up the mess and that it will get cleaned up.

The people who leave their food on the table are also greedy. Are they making the world better through their greed? No, not at all. They’re leaving their crap for other people to clean up. Does capitalism encourage this? No. It’s not designed to, either. The reason I think capitalism is a great idea is that it ensures that people who are greedy – the restaurant owners – will still be encouraged to do things that benefit others – like cleaning up the mess left by other lazy people. My support for capitalism certainly doesn’t mean I think that greed is a good thing, or that the world would be better if there were more greedy people in it. It just means that I recognize the reality of the world, that it is full of people who are greedy, and that greed is an extremely reliable motive.

There’s a lot more to my support of capitalism – particularly, because of the freedom in a capitalist system. Even if planned economies were more efficient and lead to better standards of living, I wouldn’t want to live in one, because I value my freedom above all else. Fortunately for me, and my fellow capitalists, planned economies are lousy, and despite the warnings of leftist academics in the past, the planned economies around the world have stagnated and collapsed, unable to deliver upon promises made, while the more free markets have grown and prospered.

“I Have Rights” and other Useless Abstractions

Sunday, June 17th, 2007

I often hear the phrase “your right to swing your fist ends two inches in front of my nose.” Sometimes that distance is made aribtrarily small, but the idea is generally the same: you have the right to do whatever you wish so long as you don’t hurt anyone else.

I do not think “rights” are a particularly useful abstraction. Unfortunately, they appear to be the dominant paradigm of ethical thinking in our world. Consider, then, the commonly held belief that you have the right to do whatever you want ‘as long as you don’t hurt someone else.’ How can you tell whether you’re hurting someone else? I don’t think I could find too many people who would disagree over whether I hurt someone when I punch them in the stomach. Accordingly, not too many people agree that I have a ‘right’ to punch you in the stomach.

Similarly, I don’t think I could find anyone who would disagree with me when I say that being cheated on hurts. Do I have a right to cheat on my wife? Although I have never heard anyone say that you do have a right to cheat on your spouse, people I have encountered are pretty strongly opposed to making this illegal.

Personally, I’d much rather have a stranger (perhaps a quarellous philosopher who felt I had impugned him?) get mad and throw a punch at me than have my wife cheat on me: being cheated on would hurt a lot more than being punched. However, if my wife cheats on me, I only have legal recompense if we’ve signed some kind of agreement; yet if a stranger throws a punch at me, I can press charges. Why?

Why is it that an action that causes a lot of pain is legal and ‘within my rights’, whereas one that causes only mild, temporary pain, is not within my rights? Perhaps punching someone causes them “physical pain” whereas cheating on your spouse causes them “emotional pain”. How do you distinguisih between the two? They’re both caused by chemical reactions; the emotional pain I experience as a result of a severed relationship has a solid physical basis as well.

I submit that the answer is because we are are all arbitrary in the rights we think we have and don’t have. Instead of saying “You don’t have a right to hit other people,” It makes more sense to say “I don’t like people doing that to each other, and I am willing to enforce that preference upon others.” Unfortunately, most people I’ve encountered don’t like this construction. Liberals hate the idea that they’re enforcing arbitrary preferences upon others, and Conservatives hate the idea that rights are an abstraction and nothing is objectively ‘wrong’.

The thing is, regardless of whether you think my construction is metaphysically true, it’s still useful because everybody can understand it. Moreover, it’s still accurate. If you think punching someone is wrong, then you don’t like it, and you are willing to enforce that preference of yours on other people. The fact that you feel that there is some metaphysical basis for your preference is irrelevant and just gets in the way. We don’t have to quibble over whether something is or is not a right of ours. We can all agree that we have a preference against people hitting each other, and most of us are willing to enforce this preference.

Anyone unwilling to enforce this preference is, in the words of John Stewart Mill, a “miserable creature who has no chance of being free, unless made and kept so by the exertions of better men than himself.” I don’t think such a person is metaphysically wrong, though, only because the idea of being wrong about a preference simply makes no sense to me. Am I judging anyone who doesn’t share this preference of mine? Of course. The idiocy of the ‘judgementalism is a bad thing’ mindset is a topic for another essay.  It is irrelevant what the “reasons” for these preferences are – people have been arguing over what reasons are “valid” for centuries and they’ve never made any progress.

Stop using worthless abstractions, so we can communicate with each other and get some real work done. And If you’re not willing to enforce a preference for people not hitting each other, then get a job, you goddamn hippie.

A Theory Of Knowledge

Wednesday, June 13th, 2007

I spent several weeks working on a theory of knowledge. The rough draft is availible here. Feel free to read it and leave me your comments.

I frequently make ‘discoveries’ and then forget that I’ve made these discoveries. The nice thing about keeping a journal or writing a lot in general is that you can recall ideas that you had long forgotten. I was reading some stuff I wrote here about two years ago, and I was surprised to see I had ‘discovered’ things back then. The nice thing is that I come up with some weird ideas sometimes, and I often forget them. This blog has given me a convient way to remember little gems like this post here. I would do well to include this example in my theory of knowledge. It’s bizzare and clever at the same time; those are the kinds of ideas I love!

A ‘First-Step’ Proposal

Friday, June 1st, 2007

I think that finding an economic model to subsidize fixed-cost development of ideas is the problem to solve right now. An effective solution would have extremely positive benefits for every human being on the face of the earth. If you don’t know what I’m talking about, here’s a simple example: The cost of developing a drug, testing it, and proving that it works so the satisfaction of various regulatory bodies is very high, on the order of one billion dollars. The cost of actually manufacturing the drug once it’s approved, howerver, is almost zero in most cases.

Currently, the way companies pay for development of drugs is through monopolies granted to them by the government: if you pay the cost to develop an idea, you’re the only one who can use the idea for a certain period of time. This worked well in the past, when fixed cost development was rarer. The patent model presents all kinds of problems now that most development in developed nations is of the fixed cost variety. Software patents are granted for absurd algorithms, and the question of ‘content ownership’ leads to manufacturers spending their time finding creative ways to break their products by incorporating ‘Digital Rights Management’ software. I think it’s also far from the ideal situation. In an ideal world, there would be no such thing as patents, and people would still develop ideas anyhow. How can we approximate this idea?

I have a simple solution that I think might actually work. It invovles government and taxation and redistribution of income, so I think it’s something that ought to be considered very carefully, but I think it would be quite effective. Although it is a form of government spending, If this system were implemented in place of other existing governmental systems, I think it could have a positive effect on the budget at as whole. Here’s how it would work:

Every american citizen gets a “basket” of money to spend annually. This basket of money is given to them by the government, but not in the form of cash. The ‘basket’ is given in the form of electronic tokens with monetary values. Americans can choose to spend these tokens however they want. Any person or group can sign up to accept these tokens. Signing up to accept the tokens requires you to agree to disclose as public knowledge all intellectual works you (or your company) produces, as well as your financial records.

I’m not sure what value these tokens would have, but my thinking now is that if every american had around $1,000 worth of tokens to spend, that amount of money ($300 Billion) would more than exceed the amount of public and private money spent to develop drugs and other fixed cost programs. By comparison, in 2007, the NSF recieved just 6 Billion Dollars.

Basically, it’s a micropayment system that people are forced to buy into, and which they can only spend on entities that agree to make public all intellectual works that they produce. The money could be accepted by charities, which would simplify the tax code by allowing us to eliminate the concept of a tax-exempt organizations. The money could be accepted by bloggers who agreed to make all of their information public,

The advantage it has over just having people giving that money away now is largely psychological, I think. People are reluctant to fork over money in a micropayment sense, especially for something they’re already getting for free. If you had $1,000 worth of these tokens, however, and you had to spend them somehow (or else the government would simply reclaim the money internally), people would spend them on things they thought were really important. Market-driven solutions, I think, are always best.

You could maybe extend this model further, and use it to pay for the entire education system. The more I think about it, the more I like it. What do you think?

On The Speed of Light and Video Games

Wednesday, April 18th, 2007

When you’re making a computer game with interactive 3D graphics, you need to compute lighting if you want your game to look remotely realistic.  The methods for calculating light on a surface can be either quite simple or very complex.  Simple algorithms act as if light passes through all surfaces after illuminating them, while more complicated algorithms allow light to cast shadows. The ‘best’ form of commonly used lighting is raytracing, which, as the name implies, traces rays from a light source to their destintation. (Actually, raytracing algorithms start from a viewpoint and trace outwards, but that’s not really important.) Raytracing allows for the most realistic shadowing, but it’s the most computationally expensive.

The actual physics behind light aren’t all that complicated, as long as you’re only concerned with how bright objects look and you don’t care about what happens when light goes through tiny holes or passes through irregular media. (Answer: weird stuff.)   The reason programmers put a lot of work into lighting algorithms is that computing the effects of light on a scene can take a lot of time. Real-time lighting algorithms generally rely on tricks that allow programmers to ‘get away’ with not actually computing everything properly.

In my Philosophy of Time course, we recently discussed relativity and its implications as to the meaning of time. While sitting in class yesterday, I remembered an idea that I first had while taking modern physics several years ago.  All computer lighting algorithms of which I am aware treat the speed of light as infinite.  It’s not a bad approximation because from the perspective of your typical human being, it might as well.  Does playing an upperbound on the speed of light allow you to ‘get away’ with anything computationally?

I’m pretty sure the answer is yes.  The speed of light is also theorized to be the speed at which forces are transmitted. In other words, if the sun were to ‘dissappear’ right now, we wouldn’t see the sun dissappear until about 8 minutes after it happened.  The same is true of the sun’s gravitational pull – the earth would continue to move in a circular orbit until about 8 minutes after the sun explodes.

If you had a giant computer simulating the interaction between the earth and the sun, the interaction could be parellelized quite nicely, because any change at the sun won’t be able to immediately effect anything happening on the earth. If the force of gravity were transmitted instantaneously, however, as soon as the sun exploded you’d have to recalculate earth’s orbit.

I want to do more thinking on this subject, and lorenz contraction / expansion (the tendency of objects to change drastically in size as they approach the speed of light) and how it could possibly be used to speed up a computer simulation. If it turns out that lorenz contraction does allow you to compute things faster, it would be more evidence for me that the world is, in fact, a computer simulation.

On Politics and Intelligence

Friday, April 13th, 2007

We had a ’round table’ type discussion in my AI class today about the Turing Test and the feasibility of algorithms that can pass it. In particular, the discussion centered on the Chinese Room thought experiment. The “Turing Test” is a method proposed by Alan Turing (although he didn’t call it that) to tell whether or not a computer is intelligent. Basically, a human converses with the computer via an instant-messenger style interface for a half hour, and at the end of the half hour, the human has to be able to tell whether or not the computer actually was a computer or was a human being.

This guy Searle argued that even if a computer could pass the turing test, it still might not have any understanding. A computer follows a set of rules to take input and produce output. Suppose we designed a computer that could easily pass a turing test, provided that turing test was administered in chinese. When presented with sentences in chinese, the computer would follow its rulebook and respond with some more chinese. If a human being were to sit in a room and follow the same algorithm that the computer followed, he could be said to be “passing” the turing test for intelligence, even though he would have no understanding of chinese. Searle argued that his “Chinese Room” example means that passing a turing test doesn’t make a computer intelligent.

First, let me state my opinion that arguing about wither property p applies to object x is pointless unless you’re dealing with a formally defined system. Then, you can prove either way or perhaps prove that “p applies to x” is undecidable. Either way, the nature of the debate is pretty simple. When you deal with that messy place some folks call “meatspace,” however, the arguments just get ridiculous. Invariably somebody brings up what “webster” says is the case. Words mean slightly different things to everybody that uses them, and these arguments almost always boil down to what very abstract words mean to individuals, which is why I think it’s stupid to even argue about such things. Either you think p applies to x or you don’t; there is no right answer. I tried, then to answer in terms of my understanding of how must people define intelligence.

Suppose you ask a person “Alice” whether or not an agent “Bob” is exhibiting intelligence. By agent, I mean anything – person, computer, animal, or particle. In my experience, Alice will only say Bob is intelligent if Alice thinks that Bob makes decisions in a manner roughly isomorphic to the way she (Alice) makes decisions. In other words, most people will say that something that doesn’t think in the same manner that they do is not intelligent. An algorithm that uses brute force to make moves in a game of chess operates in a manner so different from most of us that we won’t label it as intelligent. If the algorithm has a way of evaluating the value of each move based upon one or two predicted moves, uses knowledge of the history of its oponent, and perhaps makes mistakes, more people would be willing to label it “intelligent.”

The World of Politics is full of examples. How many pundits decry those who dont share their opinions as stupid? I saw a magazine cover once, asking about the result of the 2004 election, saying “How can 59 Million people be so stupid?” The 59 Million number was supposed to be the number of people that voted for Bush. Unfortunately for the Daily Mirror, counting after the election increased the total number of votes for Bush to 62 Million and the number of votes for Kerry to 59 Million. Such are the dividends of arrogance, I suppose.

As for whether or not machines could ever posses intelligence, I think that if you want say that machines can’t ever posses intelligence, you must either conclude that humans don’t posses intelligence, or that humans are somehow magical. My reasoning is simple – if you believe in the laws of science, you believe that humans are made up of particles that follow rules. A computer could simulate a human being atom by atom using the same rules. Unless you think that humans are somehow “magic” in that they don’t follow the same rules as the rest of the universe, you’d have to conclude that a [sufficiently powerful] computer could do anything a human mind could do. As to whether this will ever be feasible, that’s an entirely different debate. My answer is a solid “maybe.”