Perhaps the sharpest distinction between science and pseudo-science is that science has a far keener appreciation of human imperfections and fallibility than does pseudoscience (or ‘inerrant’ revelation). If we resolutely refuse to acknowledge where we are liable to fall into error, then we can confidently expect that error - even serious error, profound mistakes - will be our companion forever.
#TheDemonHauntedWorld 看到现在都在讲破除迷信,总感觉书里的例子本身有些过时,比如 UFO 和麦田怪圈之类的…现在的人真的还信这种东西吗?现在都是电磁场和量子力学啦。也许中学的我看更合适,恍惚记得中学课本有讲麦田怪圈。中学的时候我还在接受果壳的科学启蒙,感觉现在接触到的很多科学方法(比如 false positive)都是那个时候学的…
不过这本书里讲到的概念今天依旧适用,比如迷信之所以是迷信是因为证据不足,而不是现象本身不引起科学家的兴趣,作者也很希望找到外星人。以及如果把所有不明白的现象都称为 Demon 的话,那整个世界都要 demon haunted 了。以及一种迷信倒下了,另一种又会崛起:
So urgent on the vulgar is the necessity of believing, that the fall of any system of mythology will most probably be succeeded by the introduction of some other mode of superstition...
不过也讲到了中世纪的猎巫,我稍微感兴趣一点。说当时教皇的训谕指出 both sexes 跟魔鬼性交,然而最后被猎的都是女巫…
What sceptical thinking boils down to is the means to construct and to understand, a reasoned argument and, especially important, to recognize a fallacious or fraudulent argument. The question is not whether we like
the conclusion that emerges out of a train of reasoning, but whether the conclusion follows from the premises or starting point and whether that premise is true.
学到一种逻辑谬误:special pleading(片面辩护),就是说论证的时候故意忽略掉不利于自己观点的方面,或者指明某个东西是特例但又不说为什么是特例。主要是维基里这几个例子太好笑了:
weasel words, […] Presidents […] may therefore be tempted to arrange wars while waving the flag and calling the wars something else - ‘police actions’, ‘armed incursions’, ‘protective reaction strikes’, ‘pacification’,‘safeguarding American interests’, and a wide variety of ‘operations’, such as ‘Operation Just Cause’. Euphemisms for war are one of a broad class of reinventions of language for political purposes. Talleyrand said, ‘An important art of politicians is to find new names for institutions which under old names have become odious to the public’.
惯用伎俩了,原来叫 weasel words…刚好前段时间在#明亮的对话 里也读到含糊用词 https://rhabarberbarbara.bar/@unagi/107911355987180825
Tobacco is addictive; by many criteria more so than heroin and cocaine. […] More people have died of tobacco than in all of World War II. According to the World Health Organization, smoking kills three million people every year worldwide. This will rise to ten million annual deaths by 2020, in part because of a massive advertising campaign to portray smoking as advanced and fashionable to young women in the developing world.
2020 已经过了看了下现在的数据,貌似是一年 8 million?今天走在路上还有个人问我有没有烟…
the Harvest Moon Festival is an important holiday in traditional Chinese communities in America. In the week preceding the festival, the death rate in the community is found to fall by 35 per cent. In the following week the death rate jumps by 35 per cent. Control groups of non-Chinese show no such effect. […] On more detailed study, it turned out that the fluctuations in death rate occurred exclusively among women 75 years old or older. The Harvest Moon Festival is presided over by the oldest women in the households. They were able to stave off death for a week or two to perform their ceremonial responsibilities.
??这就是责任心吗…
if we offer too much silent assent about mysticism and superstition - even when it seems to be doing a little good - we abet a general climate in which scepticism is considered impolite, science tiresome, and rigorous thinking somehow stuffy and inappropriate. Figuring out a prudent balance takes wisdom.
An ancient Chinese proverb advises, ‘Better to be too credulous than too sceptical’, but this is from an extremely conservative society in which stability was much more prized than freedom and where the rulers had a powerful vested interest in not being challenged. Most scientists, I believe, would say, ‘Better to be too sceptical than too credulous’.
这是哪句谚语啊每次在外文书里看见中国谚语我都对不上号,想了想感觉我知道的最接近的是“宁可信其有 不可信其无”?但英文翻译成这样感觉跟作者批判的完全就不是一回事儿了?不知道是不是别的谚语…
Every now and then, I’m lucky enough to teach a kindergarten or first-grade class. Many of these children are natural-born scientists - although heavy on the wonder side and light on scepticism. They’re curious, intellectually vigorous. Provocative and insightful questions bubble out of them. They exhibit enormous enthusiasm. I’m asked follow-up questions. They’ve never heard of the notion of a ‘dumb question’.
But when I talk to high school seniors, I find something different. They memorize ‘facts’. By and large, though, the joy of discovery, the life behind those facts, has gone out of them. They’ve lost much of the wonder, and gained very little scepticism. They’re worried about asking ‘dumb’ questions; they’re willing to accept inadequate answers; they don’t pose follow-up questions; the room is awash with sidelong glances to judge, second-by-second, the approval of their peers. They come to class with their questions written out on pieces of paper, which they surreptitiously examine, waiting their turn and oblivious of whatever discussion their peers are at this moment engaged in.
But what are these time-varying electric and magnetic fields permeating all of space? What do E and B mean? We feel so much more comfortable with the idea of things touching and jiggling, pushing and pulling, rather than ‘fields’ magically moving objects at a distance, or mere mathematical abstractions. But, as Feynman pointed out, our sense that at least in everyday life we can rely on solid, sensible physical contact to explain, say, why the butter knife comes to you when you pick it up, is a misconception. What does it mean to have physical contact? What exactly is happening when you pick up a knife, or push a swing, or make a wave in a waterbed by pressing down on it periodically? When we investigate deeply, we find that there is no physical contact. Instead, the electrical charges on your hand are influencing the electrical charges on the knife or swing or waterbed, and vice versa. Despite everyday experience and common sense, even here, there is only the interaction of electric fields. Nothing is touching anything.
If we no longer insist on our notions of how Nature ought to behave, but instead stand before Nature with an open and receptive mind, we find that common sense often doesn’t work. Why not? Because our notions, both hereditary and learned, of how Nature works were forged in the millions of years our ancestors were hunters and gatherers. In this case common sense is a faithless guide because no hunter-gatherer’s life ever depended on understanding time-variable electric and magnetic fields. There were no evolutionary penalties for ignorance of Maxwell’s equations.
no evolutionary penalties for ignorance of Maxwell’s equations 好好笑😆
His unification of electricity, magnetism and light into one coherent mathematical whole is the inspiration for subsequent attempts - some successful, some still in their rudimentary stages […]
我还以为他要说 some successful, some failed!学到了,以后做得不咋成功的项目就说还在 rudimentary stage我国处于并将长期处于社会主义 rudimentary stage(什么
书里说到假设女王 1860 想造出电视机,并愿意大量投钱的话,那大概是不可能如愿的,因为前置的技术都还没有发明出来。事实上麦克斯韦方程组发现的时候,谁也不知道它能启发电波塔,通讯卫星,电视和雷达的发明。
所以,不能投钱然后指明必须发现什么技术,科学家们做不到,很可能前置技术还没有发现也根本不知要如何发现。我们应当广泛地探索,等待意想不到的结果的出现。
我就想到我读博的这个 funding 支持的 topic 其实跟我现在做的项目一毛钱关系也没有跟 funding body 做报告的时候必须要解释我为什么在做这些东西,都是教授帮我扯的谎,说我是在 explore,是意外的发现,是 creative works 所必须的,一大通一大通的。那边买账了。我教授真厉害
Basic research is where scientists are free to pursue their curiosity and interrogate Nature, not with any short-term practical end in view, but to seek knowledge for its own sake. Scientists of course have a vested interest in basic research. It’s what they like to do, in many cases why they became scientists in the first place. But it is in society’s interest to support such research. This is how the major discoveries that benefit humanity are largely made.
Maxwell wasn’t thinking of radio, radar and television when he first scratched out the fundamental equations of electromagnet-ism; Newton wasn’t dreaming of space flight or communications satellites when he first understood the motion of the Moon; Roentgen wasn’t contemplating medical diagnosis when he investigated a penetrating radiation so mysterious he called it ‘X-rays’; Curie wasn’t thinking of cancer therapy when she painstakingly extracted minute amounts of radium from tons of pitchblende; Fleming wasn’t planning on saving the lives of millions with antibiotics when he noticed a circle free of bacteria around a growth of mould; Watson and Crick weren’t imagining the cure of genetic diseases when they puzzled over the X-ray diffractometry of DNA; Rowland and Molina weren’t planning to implicate CFCs in ozone depletion when they began studying the role of halogens in stratospheric photochemistry.
If we’re absolutely sure that our beliefs are right, and those of others wrong; that we are motivated by good, and others by evil; that the King of the Universe speaks to us, and not to adherents of very different faiths; that it is wicked to challenge conventional doctrines or to ask searching questions; that our main job is to believe and obey - then the witch mania will recur in its infinite variations down to the time of the last man.
The methods of science, with all its imperfections, can be used to improve social, political and economic systems, […] Humans are not electrons or laboratory rats. But every act of Congress, every Supreme Court decision, every Presidential National Security Directive, every change in the Prime Rate is an experiment. Every shift in economic policy, every increase or decrease in funding for Head Start, every toughening of criminal sentences is an experiment. Exchanging needles, making condoms freely available, or decriminalizing marijuana are all experiments. Doing nothing to help Abyssinia against Italy, or to prevent Nazi Germany from invading the Rhineland was an experiment. Communism in Eastern Europe, the Soviet Union and China was an experiment. Privatizing mental health care or prisons is an experiment. Japan and West Germany investing a great deal in science and technology and next to nothing on defence - and finding that their economies boomed - was an experiment. Handguns are available for self-protection in Seattle, but not in nearby Vancouver, Canada; handgun killings are five times more common in Seattle and the handgun suicide rate is ten times greater in Seattle. Guns make impulsive killing easy. This is also an experiment.
读完了#TheDemonHauntedWorld,很喜欢!
最开始几章觉得有点无聊,讲的都是些麦田怪圈、UFO 这样比较过时的东西,不过主旨在于“一代人有一代人的迷信”,如果不能给公民良好的科学教育,那总会有新的愚昧产物蹦出来,辟谣是无止境的。现代人的迷信应该是磁场和量子力学吧?
后面就比较有意思了,讲了一些科学方法和态度,和生活联系比较紧。有一章专门是讲 sceptical thinking 的一系列工具(Baloney detection kit),非常实用。
这本书最后谈到了不少政治,作者认为科学方法是可以指导政治的。这让我想到中国喜欢讲绝对正确、不容动摇、坚定不移的态度、路线和政策,这是不靠谱的。人就是会犯错的,掌权者更不例外。更重要的是是否有纠错机制,比如政策的调整和掌权者的更替。只有当我们获得了良好的公民教育和科学教育,拥有可以形成自己观点的一套工具之后,掌权者才能为我们所用。
我觉得我从这本书里学到的最重要的一个知识就是“科学是不怕犯错的”。Peer review 以及后人对前人著作的引用和批评都是科学的纠错机制。这直接让我在上一篇提交的论文里指出大佬的错误的时候大胆了很多;而且最近提交的两篇论文也都附上了代码:以前我就很怕代码里有什么错,现在认识到不公布的话错误永远也不会被发现。
另外比较触动我的是作者一开始就说了这本书是他对科学的表白。所以整本书非常有感染力,让我觉得我能做科研非常地幸运。
#读书