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Xi Cheng

我和疯子的区别在于,我不疯
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愤怒的斗牛士

17 décembre

一个物种远去了(白暨豚)

虽然我个人从没觉得这动物可爱过(personally我觉得有点像会游泳的白萝卜),可是一个知名的物种消失,总是让人多少有些惋惜。

看着生物学家们培养的荧光转基因小猪,感慨人类改造自然的力量......

可是....

白暨豚绝种了

The Basics | China's River Dolphin Declared Extinct

20 Million Years and a Farewell

Courtesy of the baiji.org

GONE A baiji, which once lived in the Yangtze River. 

Published: December 17, 2006

The first species to be erased from this planet’s great and ancient Order of Cetaceans in modern times is not one of the charismatic sea mammals that have long been the focus of conservation campaigns, like the sperm whale or bottlenose dolphin.

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Related

A Troubled River Mirrors China’s Path to Modernity (November 19, 2006)

World Briefing | Asia: China: River Dolphin Declared Extinct (December 14, 2006)

The New York Times

It appears to be the baiji, a white, nearly blind denizen of the Yangtze River in China.

On Wednesday, an expedition in search of any baiji, run by Chinese biologists and baiji.org, a Swiss foundation, ended empty-handed after six weeks of patrolling its onetime waters in the middle and lower stretches of the river, the baiji’s only known habitat.

The Yangtze, Asia’s longest waterway and thought to be akin to the Amazon long ago in its biological richness, now has a dominant species: the 400 million (and counting) people busily plying its waters and industrializing its banks.

For some 20 million years, the baiji, also called the white-flag dolphin, frequented the Yangtze’s sandy shallows, using sonar to catch fish in the silty flow.

In the last few decades, the dolphin’s numbers plunged as rapidly as the Chinese economy surged. The Yangtze’s sandy shallows, which the baiji frequented, have largely been dredged for shipping.

The baiji sought fish that have been netted or driven from the river by pollution. And its sonar may have been disrupted by the propeller noise from boats above. A 1997 survey counted 13 baiji in the river. None of the dolphins survive in captivity.

In a telephone interview from Wuhan, China, August Pfluger, the founder of

baiji.org, said it was a shame that more attention had not shifted from the oceans’ more abundant cetaceans to the plight of those that live in rivers and are now essentially trapped, unable to escape human activity.

On Wednesday, Mr. Pfluger distributed a news release concluding that the baiji was “functionally extinct.” (Decades must pass before international scientific organizations take the formal step of declaring it officially extinct.)

The name of the document was, simply, “The End.”

也有善于辞令的人不同意道金斯老爹(Richard Dawkins)

Richard Dawkins恐怕是目前活着的声音最洪亮的无神论者,行文充满着罗素般的雄辩和大智慧,却缺少剑桥式的顽皮。

批评他的人在文采上也毫不逊色。

真精彩!~

(伦敦书评. 《扎,枷,忽悠偏了》)

http://www.lrb.co.uk/v28/n20/eagl01_.html

 

Lunging, Flailing, Mispunching

Terry Eagleton

The God Delusion by Richard Dawkins · Bantam, 406 pp, £20.00

Imagine someone holding forth on biology whose only knowledge of the subject is the Book of British Birds, and you have a rough idea of what it feels like to read Richard Dawkins on theology. Card-carrying rationalists like Dawkins, who is the nearest thing to a professional atheist we have had since Bertrand Russell, are in one sense the least well-equipped to understand what they castigate, since they don’t believe there is anything there to be understood, or at least anything worth understanding. This is why they invariably come up with vulgar caricatures of religious faith that would make a first-year theology student wince. The more they detest religion, the more ill-informed their criticisms of it tend to be. If they were asked to pass judgment on phenomenology or the geopolitics of South Asia, they would no doubt bone up on the question as assiduously as they could. When it comes to theology, however, any shoddy old travesty will pass muster. These days, theology is the queen of the sciences in a rather less august sense of the word than in its medieval heyday.

Dawkins on God is rather like those right-wing Cambridge dons who filed eagerly into the Senate House some years ago to non-placet Jacques Derrida for an honorary degree. Very few of them, one suspects, had read more than a few pages of his work, and even that judgment might be excessively charitable. Yet they would doubtless have been horrified to receive an essay on Hume from a student who had not read his Treatise of Human Nature. There are always topics on which otherwise scrupulous minds will cave in with scarcely a struggle to the grossest prejudice. For a lot of academic psychologists, it is Jacques Lacan; for Oxbridge philosophers it is Heidegger; for former citizens of the Soviet bloc it is the writings of Marx; for militant rationalists it is religion.

What, one wonders, are Dawkins’s views on the epistemological differences between Aquinas and Duns Scotus? Has he read Eriugena on subjectivity, Rahner on grace or Moltmann on hope? Has he even heard of them? Or does he imagine like a bumptious young barrister that you can defeat the opposition while being complacently ignorant of its toughest case? Dawkins, it appears, has sometimes been told by theologians that he sets up straw men only to bowl them over, a charge he rebuts in this book; but if The God Delusion is anything to go by, they are absolutely right. As far as theology goes, Dawkins has an enormous amount in common with Ian Paisley and American TV evangelists. Both parties agree pretty much on what religion is; it’s just that Dawkins rejects it while Oral Roberts and his unctuous tribe grow fat on it.

A molehill of instances out of a mountain of them will have to suffice. Dawkins considers that all faith is blind faith, and that Christian and Muslim children are brought up to believe unquestioningly. Not even the dim-witted clerics who knocked me about at grammar school thought that. For mainstream Christianity, reason, argument and honest doubt have always played an integral role in belief. (Where, given that he invites us at one point to question everything, is Dawkins’s own critique of science, objectivity, liberalism, atheism and the like?) Reason, to be sure, doesn’t go all the way down for believers, but it doesn’t for most sensitive, civilised non-religious types either. Even Richard Dawkins lives more by faith than by reason. We hold many beliefs that have no unimpeachably rational justification, but are nonetheless reasonable to entertain. Only positivists think that ‘rational’ means ‘scientific’. Dawkins rejects the surely reasonable case that science and religion are not in competition on the grounds that this insulates religion from rational inquiry. But this is a mistake: to claim that science and religion pose different questions to the world is not to suggest that if the bones of Jesus were discovered in Palestine, the pope should get himself down to the dole queue as fast as possible. It is rather to claim that while faith, rather like love, must involve factual knowledge, it is not reducible to it. For my claim to love you to be coherent, I must be able to explain what it is about you that justifies it; but my bank manager might agree with my dewy-eyed description of you without being in love with you himself.

Dawkins holds that the existence or non-existence of God is a scientific hypothesis which is open to rational demonstration. Christianity teaches that to claim that there is a God must be reasonable, but that this is not at all the same thing as faith. Believing in God, whatever Dawkins might think, is not like concluding that aliens or the tooth fairy exist. God is not a celestial super-object or divine UFO, about whose existence we must remain agnostic until all the evidence is in. Theologians do not believe that he is either inside or outside the universe, as Dawkins thinks they do. His transcendence and invisibility are part of what he is, which is not the case with the Loch Ness monster. This is not to say that religious people believe in a black hole, because they also consider that God has revealed himself: not, as Dawkins thinks, in the guise of a cosmic manufacturer even smarter than Dawkins himself (the New Testament has next to nothing to say about God as Creator), but for Christians at least, in the form of a reviled and murdered political criminal. The Jews of the so-called Old Testament had faith in God, but this does not mean that after debating the matter at a number of international conferences they decided to endorse the scientific hypothesis that there existed a supreme architect of the universe – even though, as Genesis reveals, they were of this opinion. They had faith in God in the sense that I have faith in you. They may well have been mistaken in their view; but they were not mistaken because their scientific hypothesis was unsound.

Dawkins speaks scoffingly of a personal God, as though it were entirely obvious exactly what this might mean. He seems to imagine God, if not exactly with a white beard, then at least as some kind of chap, however supersized. He asks how this chap can speak to billions of people simultaneously, which is rather like wondering why, if Tony Blair is an octopus, he has only two arms. For Judeo-Christianity, God is not a person in the sense that Al Gore arguably is. Nor is he a principle, an entity, or ‘existent’: in one sense of that word it would be perfectly coherent for religious types to claim that God does not in fact exist. He is, rather, the condition of possibility of any entity whatsoever, including ourselves. He is the answer to why there is something rather than nothing. God and the universe do not add up to two, any more than my envy and my left foot constitute a pair of objects.

This, not some super-manufacturing, is what is traditionally meant by the claim that God is Creator. He is what sustains all things in being by his love; and this would still be the case even if the universe had no beginning. To say that he brought it into being ex nihilo is not a measure of how very clever he is, but to suggest that he did it out of love rather than need. The world was not the consequence of an inexorable chain of cause and effect. Like a Modernist work of art, there is no necessity about it at all, and God might well have come to regret his handiwork some aeons ago. The Creation is the original acte gratuit. God is an artist who did it for the sheer love or hell of it, not a scientist at work on a magnificently rational design that will impress his research grant body no end.

Because the universe is God’s, it shares in his life, which is the life of freedom. This is why it works all by itself, and why science and Richard Dawkins are therefore both possible. The same is true of human beings: God is not an obstacle to our autonomy and enjoyment but, as Aquinas argues, the power that allows us to be ourselves. Like the unconscious, he is closer to us than we are to ourselves. He is the source of our self-determination, not the erasure of it. To be dependent on him, as to be dependent on our friends, is a matter of freedom and fulfilment. Indeed, friendship is the word Aquinas uses to characterise the relation between God and humanity.

Dawkins, who is as obsessed with the mechanics of Creation as his Creationist opponents, understands nothing of these traditional doctrines. Nor does he understand that because God is transcendent of us (which is another way of saying that he did not have to bring us about), he is free of any neurotic need for us and wants simply to be allowed to love us. Dawkins’s God, by contrast, is Satanic. Satan (‘accuser’ in Hebrew) is the misrecognition of God as Big Daddy and punitive judge, and Dawkins’s God is precisely such a repulsive superego. This false consciousness is overthrown in the person of Jesus, who reveals the Father as friend and lover rather than judge. Dawkins’s Supreme Being is the God of those who seek to avert divine wrath by sacrificing animals, being choosy in their diet and being impeccably well behaved. They cannot accept the scandal that God loves them just as they are, in all their moral shabbiness. This is one reason St Paul remarks that the law is cursed. Dawkins sees Christianity in terms of a narrowly legalistic notion of atonement – of a brutally vindictive God sacrificing his own child in recompense for being offended – and describes the belief as vicious and obnoxious. It’s a safe bet that the Archbishop of Canterbury couldn’t agree more. It was the imperial Roman state, not God, that murdered Jesus.

Dawkins thinks it odd that Christians don’t look eagerly forward to death, given that they will thereby be ushered into paradise. He does not see that Christianity, like most religious faiths, values human life deeply, which is why the martyr differs from the suicide. The suicide abandons life because it has become worthless; the martyr surrenders his or her most precious possession for the ultimate well-being of others. This act of self-giving is generally known as sacrifice, a word that has unjustly accrued all sorts of politically incorrect implications. Jesus, Dawkins speculates, might have desired his own betrayal and death, a case the New Testament writers deliberately seek to rebuff by including the Gethsemane scene, in which Jesus is clearly panicking at the prospect of his impending execution. They also put words into his mouth when he is on the cross to make much the same point. Jesus did not die because he was mad or masochistic, but because the Roman state and its assorted local lackeys and running dogs took fright at his message of love, mercy and justice, as well as at his enormous popularity with the poor, and did away with him to forestall a mass uprising in a highly volatile political situation. Several of Jesus’ close comrades were probably Zealots, members of an anti-imperialist underground movement. Judas’ surname suggests that he may have been one of them, which makes his treachery rather more intelligible: perhaps he sold out his leader in bitter disenchantment, recognising that he was not, after all, the Messiah. Messiahs are not born in poverty; they do not spurn weapons of destruction; and they tend to ride into the national capital in bullet-proof limousines with police outriders, not on a donkey.

Jesus, who pace Dawkins did indeed ‘derive his ethics from the Scriptures’ (he was a devout Jew, not the founder of a fancy new set-up), was a joke of a Messiah. He was a carnivalesque parody of a leader who understood, so it would appear, that any regime not founded on solidarity with frailty and failure is bound to collapse under its own hubris. The symbol of that failure was his crucifixion. In this faith, he was true to the source of life he enigmatically called his Father, who in the guise of the Old Testament Yahweh tells the Hebrews that he hates their burnt offerings and that their incense stinks in his nostrils. They will know him for what he is, he reminds them, when they see the hungry being filled with good things and the rich being sent empty away. You are not allowed to make a fetish or graven image of this God, since the only image of him is human flesh and blood. Salvation for Christianity has to do with caring for the sick and welcoming the immigrant, protecting the poor from the violence of the rich. It is not a ‘religious’ affair at all, and demands no special clothing, ritual behaviour or fussiness about diet. (The Catholic prohibition on meat on Fridays is an unscriptural church regulation.)

Jesus hung out with whores and social outcasts, was remarkably casual about sex, disapproved of the family (the suburban Dawkins is a trifle queasy about this), urged us to be laid-back about property and possessions, warned his followers that they too would die violently, and insisted that the truth kills and divides as well as liberates. He also cursed self-righteous prigs and deeply alarmed the ruling class.

The Christian faith holds that those who are able to look on the crucifixion and live, to accept that the traumatic truth of human history is a tortured body, might just have a chance of new life – but only by virtue of an unimaginable transformation in our currently dire condition. This is known as the resurrection. Those who don’t see this dreadful image of a mutilated innocent as the truth of history are likely to be devotees of that bright-eyed superstition known as infinite human progress, for which Dawkins is a full-blooded apologist. Or they might be well-intentioned reformers or social democrats, which from a Christian standpoint simply isn’t radical enough.

The central doctrine of Christianity, then, is not that God is a bastard. It is, in the words of the late Dominican theologian Herbert McCabe, that if you don’t love you’re dead, and if you do, they’ll kill you. Here, then, is your pie in the sky and opium of the people. It was, of course, Marx who coined that last phrase; but Marx, who in the same passage describes religion as the ‘heart of a heartless world, the soul of soulless conditions’, was rather more judicious and dialectical in his judgment on it than the lunging, flailing, mispunching Dawkins.

Now it may well be that all this is no more plausible than the tooth fairy. Most reasoning people these days will see excellent grounds to reject it. But critics of the richest, most enduring form of popular culture in human history have a moral obligation to confront that case at its most persuasive, rather than grabbing themselves a victory on the cheap by savaging it as so much garbage and gobbledygook. The mainstream theology I have just outlined may well not be true; but anyone who holds it is in my view to be respected, whereas Dawkins considers that no religious belief, anytime or anywhere, is worthy of any respect whatsoever. This, one might note, is the opinion of a man deeply averse to dogmatism. Even moderate religious views, he insists, are to be ferociously contested, since they can always lead to fanaticism.

Some currents of the liberalism that Dawkins espouses have nowadays degenerated into a rather nasty brand of neo-liberalism, but in my view this is no reason not to champion liberalism. In some obscure way, Dawkins manages to imply that the Bishop of Oxford is responsible for Osama bin Laden. His polemic would come rather more convincingly from a man who was a little less arrogantly triumphalistic about science (there are a mere one or two gestures in the book to its fallibility), and who could refrain from writing sentences like ‘this objection [to a particular scientific view] can be answered by the suggestion . . . that there are many universes,’ as though a suggestion constituted a scientific rebuttal. On the horrors that science and technology have wreaked on humanity, he is predictably silent. Yet the Apocalypse is far more likely to be the product of them than the work of religion. Swap you the Inquisition for chemical warfare.

Such is Dawkins’s unruffled scientific impartiality that in a book of almost four hundred pages, he can scarcely bring himself to concede that a single human benefit has flowed from religious faith, a view which is as a priori improbable as it is empirically false. The countless millions who have devoted their lives selflessly to the service of others in the name of Christ or Buddha or Allah are wiped from human history – and this by a self-appointed crusader against bigotry. He is like a man who equates socialism with the Gulag. Like the puritan and sex, Dawkins sees God everywhere, even where he is self-evidently absent. He thinks, for example, that the ethno-political conflict in Northern Ireland would evaporate if religion did, which to someone like me, who lives there part of the time, betrays just how little he knows about it. He also thinks rather strangely that the terms Loyalist and Nationalist are ‘euphemisms’ for Protestant and Catholic, and clearly doesn’t know the difference between a Loyalist and a Unionist or a Nationalist and a Republican. He also holds, against a good deal of the available evidence, that Islamic terrorism is inspired by religion rather than politics.

These are not just the views of an enraged atheist. They are the opinions of a readily identifiable kind of English middle-class liberal rationalist. Reading Dawkins, who occasionally writes as though ‘Thou still unravish’d bride of quietness’ is a mighty funny way to describe a Grecian urn, one can be reasonably certain that he would not be Europe’s greatest enthusiast for Foucault, psychoanalysis, agitprop, Dadaism, anarchism or separatist feminism. All of these phenomena, one imagines, would be as distasteful to his brisk, bloodless rationality as the virgin birth. Yet one can of course be an atheist and a fervent fan of them all. His God-hating, then, is by no means simply the view of a scientist admirably cleansed of prejudice. It belongs to a specific cultural context. One would not expect to muster many votes for either anarchism or the virgin birth in North Oxford. (I should point out that I use the term North Oxford in an ideological rather than geographical sense. Dawkins may be relieved to know that I don’t actually know where he lives.)

There is a very English brand of common sense that believes mostly in what it can touch, weigh and taste, and The God Delusion springs from, among other places, that particular stable. At its most philistine and provincial, it makes Dick Cheney sound like Thomas Mann. The secular Ten Commandments that Dawkins commends to us, one of which advises us to enjoy our sex lives so long as they don’t damage others, are for the most part liberal platitudes. Dawkins quite rightly detests fundamentalists; but as far as I know his anti-religious diatribes have never been matched in his work by a critique of the global capitalism that generates the hatred, anxiety, insecurity and sense of humiliation that breed fundamentalism. Instead, as the obtuse media chatter has it, it’s all down to religion.

It thus comes as no surprise that Dawkins turns out to be an old-fashioned Hegelian when it comes to global politics, believing in a zeitgeist (his own term) involving ever increasing progress, with just the occasional ‘reversal’. ‘The whole wave,’ he rhapsodises in the finest Whiggish manner, ‘keeps moving.’ There are, he generously concedes, ‘local and temporary setbacks’ like the present US government – as though that regime were an electoral aberration, rather than the harbinger of a drastic transformation of the world order that we will probably have to live with for as long as we can foresee. Dawkins, by contrast, believes, in his Herbert Spencerish way, that ‘the progressive trend is unmistakable and it will continue.’ So there we are, then: we have it from the mouth of Mr Public Science himself that aside from a few local, temporary hiccups like ecological disasters, famine, ethnic wars and nuclear wastelands, History is perpetually on the up.

Apart from the occasional perfunctory gesture to ‘sophisticated’ religious believers, Dawkins tends to see religion and fundamentalist religion as one and the same. This is not only grotesquely false; it is also a device to outflank any more reflective kind of faith by implying that it belongs to the coterie and not to the mass. The huge numbers of believers who hold something like the theology I outlined above can thus be conveniently lumped with rednecks who murder abortionists and malign homosexuals. As far as such outrages go, however, The God Delusion does a very fine job indeed. The two most deadly texts on the planet, apart perhaps from Donald Rumsfeld’s emails, are the Bible and the Koran; and Dawkins, as one the best of liberals as well as one of the worst, has done a magnificent job over the years of speaking out against that particular strain of psychopathology known as fundamentalism, whether Texan or Taliban. He is right to repudiate the brand of mealy-mouthed liberalism which believes that one has to respect other people’s silly or obnoxious ideas just because they are other people’s. In its admirably angry way, The God Delusion argues that the status of atheists in the US is nowadays about the same as that of gays fifty years ago. The book is full of vivid vignettes of the sheer horrors of religion, fundamentalist or otherwise. Nearly 50 per cent of Americans believe that a glorious Second Coming is imminent, and some of them are doing their damnedest to bring it about. But Dawkins could have told us all this without being so appallingly bitchy about those of his scientific colleagues who disagree with him, and without being so theologically illiterate. He might also have avoided being the second most frequently mentioned individual in his book – if you count God as an individual.

Terry Eagleton is John Edward Taylor Professor of English Literature at Manchester University. His latest book is How to Read a Poem.

Cheatsheet 怎么翻译,作弊床单!~~

Ladies and Gentlemen, I hereby present you the mother of all cheatsheets

http://www.tug.org/texshowcase/cheat.pdf

工程师也social

How To Network: For Introverts

Filed in archive Miscellaneous by rob on December 06, 2006

network.gif

I have a problem. I'm an introvert. I'm not shy. I'm not afraid of being in public. But I am horrible at chit-chat and gossip. If I spend an evening at a social function with people I don't know or don't like, I get home and feel like I've spent all day at the ocean. It's that fighting-the-waves and drained-by-the-sun kind of tired. I would rather spend four hours with my head stapled to the carpet. I would be more comfortable that way.
In engineering school, I was fine. Engineering classes aren't particularly interactive, and in study groups, we only spoke when needed. In business school... well that was tough. I tried to sit in the back most of the time so as not to participate. But it was a mistake not to go to all the social functions. There are probably people from my classes in high places now, and they won't remember me and I don't know what they do.
For better or for worse, connections make the world go round. Just this week I was reading about the importance of networks in the VC industry. It applies to all of business though. Knowing lots of people reduces your headaches by a factor of 10 when you need to get something done. Requests from strangers don't get filled as quickly as requests from acquaintances or friends. If you don't network, you find yourself in situations (particularly as an entrepreneur or business owner) where you need someone with a certain skill set and you don't even know where to start looking. Then you have to advertise a position or opportunity, and weed through the applicants to find the 5% that are actually worth talking to.
Over the last 7 years I've made a lot of progress. Here's what I've learned about networking as an introvert.
Networking is an investment, not a nuisance.
Imagine if you could always find what you needed in just 1 or 2 phone calls. If you are well networked, you probably can. By putting in the time to build your network, you save time when you need to get things done. Well networked people don't have to waste time firing off random emails to people they don't know, buying leads or industry lists, or hunting through hundreds of resumes for the right candidate. Pick your poison. Do you want to put in the time now, or later?
At first, you have to kiss a lot of frogs.
Sometimes you have to start by picking events at random. You spend an hour in a very uncomfortable setting, but you learn what to go to and what to skip. Eventually you find a few people or events that you like.
Don't spend too much time on it.
If you wear yourself out, you won't ever want to do it. Accept your limitations and just do 1 or 2 events a month. It takes a long time to build these relationships, so it's better to stick with a few groups over the long haul than 10 groups for two months.
Do cool things.
Introverts typically don't like to talk about themselves - we prefer to talk about ideas. Force yourself to discuss some of the things you've done. Don't brag, make sure they are relevant to the conversation. Then the extroverts can talk about you and pass your achievements along. It gives you credibility in some circles. Yes, I realize you would rather be accepted for what you think and know, but the truth is that the world measures you by what you do.
Invite people to lunch.
Or invite them to coffee or for a beer after work. If you meet a fellow introvert, he/she is unlikely to do the inviting, so you have to do it.
Go regularly to things you like.
When I was living on the Space Coast, I went to a group called Founders Forum. It was for entrepreneurs and investors. I learned a lot at the meetings, but it took about 6 months for people to start recognizing me and saying hi. It was uncomfortable, being 23 in a room of mostly middle aged people. You just have to keep showing up, month after month.
Analyze your results.
Introverts are intuitive and analytical. Use that skill. What is working? What isn't? Where do you get the most bang for your buck?
Find the key nodes in the network.
Don't find a marketing person, find someone who knows lots of marketing people and then invite that person to lunch. If networking wears you out, you will be better off finding the ten key people who all know lots of other people, than finding and maintaining fifty relationships. This takes a long time because it is hard to find the right person. Look for introverts that, for whatever reason, are in jobs that force them to be well connected. Extroverts that share one of your core passions are also a good match.
Don't network just for the sake of networking.
There is a book called "Never Eat Alone". That's all fine and good for extroverts, but we introverts can't network just to network. As you meet more people, focus on spending your time with the ones that are the best fit, and focus less on meeting new people.
The hardest part for me was the first few events. I sometimes feel like I don't know what to say when I meet new people. I would be soooo much more comfortable if someone started a conversation by asking me what I thought of utilitarianism as a way to make ethical decisions, or whether Sarbanes-Oxley has encouraged companies to list on other exchanges. Ideas usually seem so much more interesting than people. But, by sticking it out, month after month, I've slowly learned some good things to say, and grown more comfortable meeting strangers. So trust me when I say it gets easier.
The majority gets to set the rules, and the majority of people are extroverts (70% I think). Networking is an important key to unlocking your own potential. So play by the rules of the game the best that you can, or don't sit and complain when you have a great idea and no one to help you launch it. I hope you can learn from my experiences, so that you don't waste as much time as I did fighting the inevitable.

有些老大并不同意什么都需要OO

Paul Graham, a lisp guru

Why Arc isn't especially Object-Oriented

There is a kind of mania for object-oriented programming at the moment, but some of the smartest programmers I know are some of the least excited about it.
My own feeling is that object-oriented programming is a useful technique in some cases, but it isn't something that has to pervade every program you write. You should be able to define new types, but you shouldn't have to express every program as the definition of new types.
I think there are five reasons people like object-oriented programming, and three and a half of them are bad:

  1. Object-oriented programming is exciting if you have a statically-typed language without lexical closures or macros. To some degree, it offers a way around these limitations. (See Greenspun's Tenth Rule.)
  2. Object-oriented programming is popular in big companies, because it suits the way they write software. At big companies, software tends to be written by large (and frequently changing) teams of mediocre programmers. Object-oriented programming imposes a discipline on these programmers that prevents any one of them from doing too much damage. The price is that the resulting code is bloated with protocols and full of duplication. This is not too high a price for big companies, because their software is probably going to be bloated and full of duplication anyway.
  3. Object-oriented programming generates a lot of what looks like work. Back in the days of fanfold, there was a type of programmer who would only put five or ten lines of code on a page, preceded by twenty lines of elaborately formatted comments. Object-oriented programming is like crack for these people: it lets you incorporate all this scaffolding right into your source code. Something that a Lisp hacker might handle by pushing a symbol onto a list becomes a whole file of classes and methods. So it is a good tool if you want to convince yourself, or someone else, that you are doing a lot of work.
  4. If a language is itself an object-oriented program, it can be extended by users. Well, maybe. Or maybe you can do even better by offering the sub-concepts of object-oriented programming a la carte. Overloading, for example, is not intrinsically tied to classes. We'll see.
  5. Object-oriented abstractions map neatly onto the domains of certain specific kinds of programs, like simulations and CAD systems.

I personally have never needed object-oriented abstractions. Common Lisp has an enormously powerful object system and I've never used it once. I've done a lot of things (e.g. making hash tables full of closures) that would have required object-oriented techniques to do in wimpier languages, but I have never had to use CLOS.
Maybe I'm just stupid, or have worked on some limited subset of applications. There is a danger in designing a language based on one's own experience of programming. But it seems more dangerous to put stuff in that you've never needed because it's thought to be a good idea.

8 août

物换星移

这个物欲横流的年代
空姐的质量每况愈下
以前听飞行员哥们说的时候还没太在意,
 
 
 
2 août

剽悍的MIT,MIT的剽悍(MIT养生之道)

Burnout Prevention and Recovery


  1. STOP DENYING. Listen to the wisdom of your body. Begin to freely admit the stresses and pressures which have manifested physically, mentally, or emotionally.
    • MIT VIEW: Work until the physical pain forces you into unconsciousness.
  2. AVOID ISOLATION. Don't do everything alone! Develop or renew intimacies with friends and loved ones. Closeness not only brings new insights, but also is anathema to agitation and depression.
    • MIT VIEW: Shut your office door and lock it from the inside so no one will distract you. They're just trying to hurt your productivity.
  3. CHANGE YOUR CIRCUMSTANCES. If your job, your relationship, a situation, or a person is dragging you under, try to alter your circumstance, or if necessary, leave.
    • MIT VIEW: If you feel something is dragging you down, suppress these thoughts. This is a weakness. Drink more coffee.
  4. DIMINISH INTENSITY IN YOUR LIFE. Pinpoint those areas or aspects which summon up the most concentrated intensity and work toward alleviating that pressure.
    • MIT VIEW: Increase intensity. Maximum intensity = maximum productivity. If you find yourself relaxed and with your mind wandering, you are probably having a detrimental effect on the recovery rate.
  5. STOP OVERNURTURING. If you routinely take on other people's problems and responsibilities, learn to gracefully disengage. Try to get some nurturing for yourself.
    • MIT VIEW: Always attempt to do everything. You ARE responsible for it all. Perhaps you haven't thoroughly read your job description.
  6. LEARN TO SAY "NO". You'll help diminish intensity by speaking up for yourself. This means refusing additional requests or demands on your time or emotions.
    • MIT VIEW: Never say no to anything. It shows weakness, and lowers the research volume. Never put off until tomorrow what you can do at midnight.
  7. BEGIN TO BACK OFF AND DETACH. Learn to delegate, not only at work, but also at home and with friends. In this case, detachment means rescuing yourself for yourself.
    • MIT VIEW: Delegating is a sign of weakness. If you want it done right, do it yourself (see #5).
  8. REASSESS YOUR VALUES. Try to sort out the meaningful values from the temporary and fleeting, the essential from the nonessential. You'll conserve energy and time, and begin to feel more centered.
    • MIT VIEW: Stop thinking about your own problems. This is selfish. If your values change, we will make an announcement at the Corporation meeting. Until then, if someone calls you and questions your priorities, tell them that you are unable to comment on this and give them the number for Community and Government Relations. It will be taken care of.
  9. LEARN TO PACE YOURSELF. Try to take life in moderation. You only have so much energy available. Ascertain what is wanted and needed in your life, then begin to balance work with love, pleasure, and relaxation.
    • MIT VIEW: A balanced life is a myth perpetuated by liberal arts schools. Don't be a fool: the only thing that matters is work and productivity.
  10. TAKE CARE OF YOUR BODY. Don't skip meals, abuse yourself with rigid diets, disregard your need for sleep, or break the doctor appointments. Take care of yourself nutritionally.
    • MIT VIEW: Your body serves your mind, your mind serves the Institute. Push the mind and the body will follow. Drink Mountain Dew.
  11. DIMINISH WORRY AND ANXIETY. Try to keep superstitious worrying to a minimum - it changes nothing. You'll have a better grip on your situation if you spend less time worrying and more time taking care of your real needs.
    • MIT VIEW: If you're not worrying about work, you must not be very committed to it. We'll find someone who is.
  12. KEEP YOUR SENSE OF HUMOR. Begin to bring job and happy moments into your life. Very few people suffer burnout when they're having fun.
    • MIT VIEW: So, you think you work is funny? We'll discuss this with your director on Friday, at 7:00 P.M.!