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读书有感

Constitutional Law by Yale 听课笔记(四)

这门课真的是超级耗精力,video很长,还有很多资料要查,还得写很长的assignment...勉强跟着,多少有点力不从心了...好在结束了。

笔记零零散散的,更多是边写作业边查资料所得。这门课后半部分,professor Akhil Reed Amar 主要是在讲unwritten Constitution,就是说那些历史啊典故啊什么的,虽然没有具体写在宪法的8000字里面,但是还是彰显着宪法的精神和光辉的。大致的框架和可以从Amar的这本书里面看出来:

America’s Unwritten Constitution : The Precedents and Principles We Live By.

书可以在amazon上搜到,不过我看到一篇书评还蛮好的,很提纲挈领的总结了一番。抄一下:

  • The Enacted Constitution: Amar undermines the constitutional text by trying to demonstrate that we don’t actually know what the “official” version says anyway. And he goes on about “the Year of our Lord” about five times longer than one might have thought possible, debating with himself about whether that reference in the Constitution collides with the First Amendment.
  • The Implicit Constitution: Amar relies mostly on the predicate-act canon and the whole-text canon. The duty to do X includes the authority to do Y if Y is necessary to carry out X. On the whole, he stands on pretty firm ground here.
  • The Lived Constitution: You have a constitutional right “to have a pet dog, to play the fiddle, to relax at home, to enjoy family life with your loved ones, to raise your children, to wear a hat.” You get the idea. So how do you enforce your warm and cuddly constitutional right to “enjoy family life with your loved ones”? Amar doesn’t say.
  • The Warrented Constitution (that’s not a misspelling but a lame pun in homage to Chief Justice Earl Warren): The Warren Court (1953-1969) honored the “spirit” of the Constitution (and the letter, too, Amar argues unconvincingly). The Warren Court, of course, represented the official unmooring of constitutional law from the words of the document that the Court was supposed to be “interpreting.”
  • The Doctrinal Constitution: Amar asserts that Roe v. Wade was correct because it was “rights-expanding”: he argues that “a case that construes a textual constitutional right too narrowly is different from one that construes the right too broadly. Even if both cases come to be widely embraced by the citizenry, only the rights-expanding case interacts with the text of the Ninth and Fourteenth Amendments so as to specially immunize it from subsequent reversal.”
  • The Symbolic Constitution: “The most important thing to understand about America’s symbolic Constitution is simply that it exists, Amar writes:

Americans of all stripes can easily name certain texts that stand outside the confines of the written Constitution yet operate in American constitutional discourse as privileged sources of meaning, inspiration, and guidance. True, once we move beyond this core set of texts, the outer boundaries of the canon are fuzzy.

   Amar’s examples: the Gettysburg Address and Martin Luther King’s “I Have a Dream” speech.

  • The Feminist Constitution: In Amar’s view, all law relating to women was undermined by women’s suffrage: “under an entirely plausible vision of America’s unwritten feminist Constitution, judges soon after 1920 could have held that laws such as these [relating to contraception and abortion] were valid only if reenacted by a legislature elected by women voting equally alongside men. As for these laws, perhaps judges should have wiped the legal slate clean in 1920, by striking down the old laws and thereby obliging states to put the matter to a fresh vote.” To quote this is to refute it.
  • The Georgian Constitution (the name is based on that of George Washington): This chapter is mostly padding based on George Washington’s presidential (and precedential) actions. Perhaps it was intended to relieve traditionalists after the unreality of the preceding chapter.
  • The Institutional Constitution: Again, this is padding for traditionalists. “[P]ost-1789 institutional practice thus furnishes a powerful lens through which to read the 1789 blueprint.”
  • The Partisan Constitution: “Most of the rules and roles textually delineated in the original Constitution — for House members, senators, department heads, vice presidents, members of the electoral college, and so on — must today be reread through the prism of America’s two-party system.” But why?
  • The Conscientious Constitution: Here we get to the personal preferences of judges: “[T]here is a proper place for conscience — a concept that forms part of the necessary, albeit unwritten, substratum of American constitutionalism.” If you’re a judge, follow your bliss.
  • The Unfinished Constitution: This is the great morphing Constitution that is “still to be written, the hoped?for Constitution of 2020 — and of 2121 and 2222.” This constitutional morphing is our “constitutional donation.” Amar’s doubt about it is confirmed in his use of surely: “Though this [donation] does not reside on the clear surface of any explicit constitutional text, surely it forms an integral part of America’s unwritten Constitution.”

实在是每一节都很长...各种历史背景事件来龙去脉这样,读起来蛮累的。我个人印象比较深的是乔治华盛顿,比如他的言行举止言传身教确立了很多传统;然后就是一些彰显人文精神和时代光辉的文字演讲,比如大家耳熟能详的I have a dream;最后就是美国法院习惯的 stare decisis 即“遵循先例”,各种案例比如为什么现在是一人一票这样。宪法修正案也有很多故事什么的,学法律的过程除了看条文本身还要熟知很多cases,好累。我的理解是,法律是一个社会的规范条文,所以这东西不是证实或者证伪这么简单,理解法律除了需要抽丝剥茧之外,还考验人的综合和联想能力。一句话,费时的熟练工种...

虽然我是三天打鱼两天晒网,deadline之前奋力突击类型的,但是真的从这门课学到了很多东西。理解一个社会制度远远比理解一个数理模型难的多...所以宪法学起来其实比税法之类的经济法难很多,就像以前常说的一句话,经济学家考虑的更多是效率而非公平(efficiency > fairness),而法学家考虑的是社会整体的诉求和运转规则。出发点完全是不一样的。利益分析简单,而情理分析就好难。

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读书有感

最近读paper的一些领悟

读paper易,做model不易,且读且珍惜。下面仅为个人半夜胡言乱语,轻拍~

最近扫paper的数量没什么下降,但是深入读全文的paper越来越少。一个原因大概是很多working paper 研究的问题我不怎么关心?毕竟不是读书的时候需要读很多paper来应对coursework presentation和literature review...

说说一些感受这样。看paper首先是看标题,有没有特定的关键字;有的话再去看下一步摘要,有没有有意思的地方,无论是建模方面还是结论。摘要有意思的话就标记出来,待扫完目录后去打印个别全文细细咀嚼。感觉现在扫working paper的功力越来越纯熟了,一个小时完成上述工序扫个十篇左右这样。

但是比较哀伤的是我发现大部分选出来的paper还都能读懂,尤其是实证的paper,清一水的不是DID就是RE或者RDD,最多来个IV。读起来更有意思的地方怕是背景描述这块,有很多历史人文地域常识可以了解。我想说那个ATE不是不重要啦,但这货真的不稳定(随时间迁移),做一个时间节点上的估计有多大的概率会历史重演呢?而且很多时候是需要多个因素共同作用的,就跟个化学实验似的,控制的除了原材料还有温度湿度气压等等,实验室里面这些客观条件可控,但经济发展中不可控的甚至不可观测的客观因素实在是太多了。计量更多的框架还停留于单因素分析上(当然单因素已然分析不易),是不是有点落后于时代的诉求呢?唉可能还是要期待数学工具、统计理念对于关系数据处理的更深理解吧。现在的network model还是孱弱了一点。

默默的再补充一个实践中在大数据(big volumn big dimensions)客户数据建模中的体会。很多的时候我们会倾向于找客户的原始特征,所谓的demographical variables,性别啊年龄啊收入啊。但是除了facebook这样真人社交网站,谁会告诉网站自己是男是女年方几何呢?然后为了找这些”珍贵的”数据,要不就是通过现有的数据来猜,比如买女士用品的八成是女性;要么就是通过调查来获取一部分人的真实社会属性。然后呢?扔到模型里面回归去...

我想说,若是前一种,何必绕着弯子从可观测的数据生生的去猜不可观测的数据,然后再用猜出来的数据去预测其他东西?直接用可观测的数据好了。本来就是社会属性->特定可观测行为->预测未来行为这样的路径(比如我知道啊买尿布啤酒组合的八成是新晋爸爸,但是我只要知道你买了尿布啤酒日后就也需要婴儿车日后消费潜力巨大就足够了嘛,我干嘛一定要去知道你是男性已婚已育?看看你买的尿布牌子我大概也知道你家的消费层次和接下来的品牌层次偏好了,何必去苦苦的猜你的收入?),有点像经济学里的“显示偏好原理”,或者有向的贝叶斯网络这样(给定上层节点信息,上上层节点信息无用),何必这么折腾...若是后一种,还需要去费时费力不讨好的调查?又不是以前数据尤其是观察维度稀缺的时代了。每次见到刚被象牙塔教育好的遵循123456黄金律步骤出来的建模者,我都忍不住先深深的吸一口气冷气然后苦口婆心的讲一下为什么这些东西其实不那么重要...

都是被现有的实证paper毒害的,动不动就是入户调查数据。哎,人家是做田野实验的需要手工搜集数据各种来之不易,和你们玩大数据的到处都是蛛丝马迹不一样啊!干嘛只会比着葫芦画瓢,明显使劲的方向不怎么对嘛。学界没数据啊所以没办法,业界一堆数据还愁数据搜集?随随便便做个随机试验前后数据爱取多少取多少...喵,尤其是做预测模型的,其实可以不用那么折腾呀。读paper易,却也是取其精华弃其糟粕,玩的灵活才开心嘛。

再啰嗦一句好了,学计算机和数据挖掘出身的只学怎么在现有数据基础上建模,不学基本的数据搜集实验设计这些统计理念,所以不会往这边想;学统计的又被一群没玩过大数据的长江前浪所禁锢,框架就在那里,你见或不见。估计等现在这一辈成熟了下一辈人就真的是站在巨人的肩膀上了。

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读书有感

英文写作笔记(二):避免废话太多

依旧从BerkeleyX: ColWri2.2x Principles of Written English 抄过来的。我真的对这门课是相见恨晚!呜呜,我写英文各种罗嗦(楼下群众:你中文更罗嗦好不好?你看落园多少废话?)

ps 中间有段讲写作语气的我没抄过来,这个感觉和语言就无关了,更多是用词的精准...

------------------------------------------------

what causes wordiness?

Wordiness is using more words than you need to in order to write what you mean.  Everyone has a tendency to be too wordy at times. Some of the causes of this wordiness are:

- Trying to sound too formal or academic. Unfortunately, in academic writing, there are a lot of examples of wordy writing. This doesn't mean you have to model your writing on bad examples. Your readers will always appreciate if you state your ideas clearly, and using no more words than needed.

- Not knowing more precise vocabulary.  For example, saying, She ran quickly to the store can be made somewhat less wordy, and more precise, by saying: She raced to the store (race=run quickly). Finding the right vocabulary can help you cut down the number of words you use. Every reduction helps, even if it's only a word or two.

- Using too many unnecessary and vague modifiers.  Typically, modifiers like really, very, quite, and similar words add no meaning to your writing. If you need to modify a word, find precise modifiers. For example, instead of There's a really tall building near my house, write: There's a 50-story building near my house. 

- Using too many prepositional phrases or possessives. These types of phrases can add length to your sentences, often unnecessarily. So, instead of The car belonging to Mr. Wang is in the garage [10 words], write: Mr. Wang's car is in the garage [7 words].

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Writing less wordy prose

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读书有感

英文写作笔记(一):常见写作方向性错误

下面是抄过来的...来自:BerkeleyX: ColWri2.2x Principles of Written English。读完觉得我的英文写作真的是没受过正规教育...哎。

-------------------

There are two main sources of error in diction:

1. Choosing the wrong word. This can happen because of confusion between homonyms (words that sound alike but are spelled differently), or because the meaning of the word isn't fully understood.

2. Choosing colloquial, or less formal spoken language when standard or more formal language is called for (or vice versa). In academic writing, formal diction is generally expected.

Here are 21 common errors made in writing formal diction. How many of these usage errors have you made?

1. A lot/lots of

Colloquial: Diana likes her apartment a lot.
Formal: Diana likes her apartment very much.

Colloquial: There are lots of books in our library.
Formal: There are many books in our library.

2. Among/between
(Tip: Among involves more than two; between involves only two)

Colloquial: Discussions between our group members were often very lively.

Discussions Formal: Discussions among our group members were often very lively.

3. Around/ about
(Tip:  Don't use around to indicate time, distance, or other quantity.)

Colloquial: The class usually begins around nine.
Formal: The class usually begins at about nine.

4. Badly
(Tip: "Badly" is not a substitute for "very much.")

Colloquial: The team wanted to win really badly.
Formal: The team wanted desperately to win.

5. Based off of

Colloquial: Based off of that information,  we can move ahead with the plan.
Formal: Based on that information, we can move ahead with the plan.

6. Because
(Tip: Don't use "because" after " reason.")

Colloquial: The reason for our flight delay is because of bad weather.
Formal: The reason for our flight delay is the bad weather.

7. A bunch/bunches
(Tip: Use bunch or bunches only for things that are bound or grow together, like bananas and grapes; it is not used for other countable nouns.)

Colloquial: A bunch of us are going to the movies tonight.
Formal: A group of us are going to the movies tonight.
Formal: There are three bunches of bananas on the counter.

8. Each other/one other
(Tip: Each other refers to two, one another refers to more than two.)

Colloquial: Everyone at the party wished each other a happy new year.
Formal: Everyone at the party wished one another a happy new year.
Formal: My sister and I wished each other a happy new year.

9. Guys

Colloquial: I hope you guys can join me at the restaurant.
Formal: I hope all of you can join me at the restaurant.

10. In / Into
(Tip:  "In" means "within" or "inside", while "into" refers to the motion of going from outside to inside.)

Colloquial: Bill went in the bus station to buy a ticket.
Formal: Bill went into the bus station to buy a ticket.

11. Infer/imply
(Tip: To infer is an act of thinking, to imply is an act of saying something.)

Incorrect:  I saw your memo about a noon meeting. Are you inferring that we should have lunch together?
Correct: I saw your memo about a noon meeting. Are you implying that we should have lunch together?

12. It's/its

 

Incorrect: The committee has reached it's goals this year.
Correct: The committee has reached its goals this year.

13. Kind of / sort of
(Tip: Don't use "kind of" or "sort of" when you mean "very" , "rather," or "somewhat." )

Colloquial: Jim was sort of angry when he learned we went to the park without him.
Formal: Jim was somewhat upset when he learned we went to the park without him.

14. Less than/fewer than
(Tip: Use less than only with uncountable nouns.)

Colloquial: There are less people in the store today than yesterday.
Formal: There are fewer people in the store today than yesterday.

15. Like / as
(Tip: Use "as" when comparing actions, "like" when comparing things.)

Colloquial: Alan wants to write a new essay, just like Sarah does.
Formal: Alan wants to write a new essay just as Sarah does.

16. Like / maybe
(Tip: Avoid using "like" and "maybe" when estimating; use "approximately", "perhaps" or "about" instead.)

Colloquial: There were like thirty people at my birthday party.
Formal: There were approximately thirty people at my birthday party.

17. Meantime

Colloquial: Meantime, the rain continued to pour.
Formal: In the meantime, the rain continued to pour.
Formal: Meanwhile, the rain continued to pour.

18. On account of

Colloquial: On the account of the weather, our plane was late.
Formal: Because of the weather, our plane was late.

19. Plenty

Colloquial: It has been plenty warm all week.
Formal: It has been very warm all week.

20. So
(Tip: Don't use "so" as a synonym for "therefore".)

Colloquial: Dmitry knew that I missed class, so he shared his notes.
Formal: Dmitry knew that I missed class; therefore, he shared his notes.

Colloquial: This week's homework is so difficult.
Formal: This week's homework is very difficult.

21. They're/their/there

 

Incorrect: Do you know if their going to the party?
Correct: Do you know if they're going to the party?

Incorrect: What is there address?
Correct: What is their address?

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读书有感

Constitutional Law by Yale 听课笔记(三)

宪法修正过程。

第一次大的修正称之为Bill of Rights, 1791年通过。后面的修正案大都集中在某一段时间。

Bill of Rights 修正案1-12 十八世纪末十九世纪初

Civil War Amendments/Reconstruction Amendments 修正案13-15 十九世纪中期,civil war后

The Progressive Era Amendments 修正案16-18  二十世纪初

详细的列表在这里:http://en.wikipedia.org/wiki/List_of_amendments_to_the_United_States_Constitution

Bill of Rights主要的诉求是:

The Bill of Rights enumerates freedoms not explicitly indicated in the main body of the Constitution, such as freedom of religion, freedom of speech, a free press, and free assembly; the right to keep and bear arms; freedom from unreasonable search and seizure, security in personal effects, and freedom from warrants issued without probable cause; indictment by a grand jury for any capital or "infamous crime"; guarantee of a speedy, public trial with an impartial jury; and prohibition of double jeopardy. In addition, the Bill of Rights reserves for the people any rights not specifically mentioned in the Constitution and reserves all powers not specifically granted to the federal government to the people or the States.

Civil War Amendments主要是告别奴隶制度:

Their proponents saw them as transforming the United States from a country that was (in Abraham Lincoln's words) "half slave and half free" to one in which the constitutionally guaranteed "blessings of liberty" would be extended to the entire populace, including the former slaves and their descendants.

Progressive Era Amendments更多是现代化的标志:

The Sixteenth Amendment gave the federal government the power to lay and collect an income tax regardless of the source of that income.

The Seventeenth Amendment provided for the direct election of Senators by the people rather than by the state legislatures as the original Constitution called for.

The Eighteenth Amendment prohibited the import, export, transport, manufacture or sale of intoxicating beverages.

The Nineteenth Amendment gave women the right to vote.

最有趣的就是妇女投票权了。毕竟是需要男人们投票来决定妇女有权投票。一开始是从稀缺妇女的 Wyoming Territory州开始,然后扩展到全国。

最后的二战后的修正则主要是一些对于民主的更深入理解,比如总统任期的限制。