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		Duo and double means two	2019-01-27 07:27:55

Duo and double means two

Doubt: When there are two possibilities, you are in doubt.

Dubious: When one works for two sides, he is dubious.

Duel: When two persons, two companies or two countries are contending for dominance, the outcome will be determined by a deadly duel.

Duplicity: Duplicity is double dealing. It is cheating.

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作者：jingchen 回复贾舟子

留言时间：2019-01-27 13:10:20

Thank you for your witty comments.


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作者：贾舟子

留言时间：2019-01-27 09:09:59

It's hard to duplicate what you do.


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· Soldner’s 1801 paper on light

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【Reading (7)】

· Why nations fail

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【Relativity】

· Soldner’s 1801 paper on light

· Astronauts then and now, Scien

· Is Einstein God

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· Urban sprawl without populatio

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· Some questions about AI

· The mechanism of eye bags

· 请教一个物理问题

· Statistics: What they attract?

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· What does anti mean?

· A post from my daughter

· The Purpose of Equity, Diversi

· 价值理论

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· On the rapid change of Keynes’

· Why are dominant social theori

· Pension system and fertility

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· Potential energy and different

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· A note on labor theory of valu

【Finance(3)】

· How hard is it to establish a

· How inflation enriches politic

· Finance: A New Theoretical Fou

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· Natural vaccines and artificia

· Why was the Spanish Flu so dea

· COVID UPDATE: What is the trut

· The impacts of vaccines on hum

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· 李跃华医生是怎么想到用苯酚治疗

· On statistics related to vacci

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· How many people died from COVI

· On the measurement of expected

· How long is a day on Venus?

· Why is the air pressure on Ven

· Insightful writing on hydrogen

· Some questions about blood bra

· Mortality rates by month

· Fantasy and fantastic

· “Parting the Red Sea" Effect

· opposite of hidden variable: N

· Empirical verification of quan

· A playlist on quantum spin

· Great Physicists and Overhyped

· A good video touching on measu

· On Bell's Inequality

· Fine Structure Constant

· How does Lagrangian turn into

· Phase velocity and group veloc

【Economics (6)】

· On Inequality (Revised)

· Inside Job and Predator Nation

· Insights from GDI

· Economy and Society by Max Web

· On Paul Samuelson

· What is the energy return from

· The power structure of a socie

· How Economics Became a Mathema

· On the current state of econom

【Reading (6)】

· public’s distrust to authoriti

· Old Testament

· Reading Karl Marx

· US bombed the Nord Stream Pipe

· The Thin Red Line by James Jon

· The Call of the Wild by Jack L

· Speakable and unspeakable in q

· When Life Nearly Died

· The Rise and Fall of American

· Cells, gels and the engines of

【Song】

· A song from my son

· 儿子写给我的歌

· Video and writing by my daught

· A song from my kids as a gift

· Ace of Spades

· Mother's Day: A song to m

【Science (13)】

· A reflection on QR code

· Why water is not acidic?

· The timing of the great extinc

· The Carrying Capacity of the P

· A unified understanding of bod

· Carbon dioxide and global temp

· Seven

· Warburg effect and cancer trea

· amino acids and their genetic

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· 词汇的来源：从具体到抽象

· 狐狸

· Orient rising and occident dec

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· war: ‘获‘， ’和 ‘， ’祸 ‘

· A Tourist from Heaven

· Morning after mourning

· Blank Paper

· 努力的奴隶

· Excursion and incursion

· Who want the pandemic to end?

· Left wing and right wing

· Lion king and lion

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· AT and CG: What are their perc

· What generates the earth’s mag

· Gilbert Ling: A Great Pioneer

· What do physical constants mea

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· 民族要振兴，人口要控制？

· 十个孩子的家

· Demography, Economy, and Socie

· Demographics and government po

· Long reign of the boomers

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· What does Austria mean?

· Fencing and boxing

· Polis, politics and police

· Shepherd is sheepherd

· What does Harbin （哈尔滨）mea

· Leg and legal

· Chariot （車）

· 时辰和生肖

· Statistics, languages and huma

【Conservation Law】

· Zero sum game is conservation

· The long reach of the conserva

· George Gammon

· There is no liberty without sl

· The conservation law of energy

· 守恒律

· The long arm of conservation l

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· When a sunrise cause turns int

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· Animal and animosity

· Savage, salvage, save

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· Why are the primary colors red

· Humans and germs: A systematic

· Why Demonize Carbon?

· Evidence in Scientific Researc

· The wisdom of the body: Immune

· Action or inaction

· Small molecules as catalysts

· A question about ivermectin (a

· Weakness in left arm and heart

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· 卡夫卡

· The fourth phase of water by G

· Critique of Hegel's Philo

· On the Jewish Question by Karl

· The Great Leveler: Violence an

· The Case Against Education by

· Some information on Korean War

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· Iron Law of Oligarchy

· Richard Cantillon: An Essay on

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· How to reduce noise from refri

· How do mRNA vaccines work?

· On Norbert Wiener

· What is the goal of scientific

· Oxy is acid

· New developments on the origin

· Shall we immunize for every di

· Prime Numbers and the Riemann

· 爆发力和耐力

· Measured and actual expected l

· Bear, ours and ursus

· 隋朝的杨家

· East, Easter, yeast

· Why Indo-European languages sp

· Poplar, popular, populus, popu

【History】

· The wonder of the promised lan

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· Dark Matter, a movie

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· The Economic Consequence of th

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· John Williams and The Theory o

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· Impotent and Important

· Pretend and pretender

【Reading (3)】

· The Problem of China by Bertra

· This side of paradise

· The Unbearable Lightness of Be

· One Hundred Years of Solitude

· Wolyn: The best movie about Wo

· The Unbearable Lightness of Be

· On the origin of species by Ch

· Descent of Man, by Charles Dar

· We and Zamyatin

· Comments on Apocalypse Never

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· Entropy: In intuitive Introduc

· A reflection on the theories o

· A generalization of quantum th

· Quantum mechanics and Riemann

· What is quantum mechanics

· Where does hope come from

· How solar cells work?

· Why LED lights are more effici

· An Introduction to Quantum Mec

· Fourier transform and uncertai

· 一些物理和数学中基本概念的直观

【Carbon and climate】

· Carbon Dioxide and Carrying Ca

· Noah’s ark and global warming

· Carbon: The Foundation of Life

· George Orwell: The Road to Wig

· Carbon dioxide and vegetation

· Cap and trade

· Ivar Giaever:

· Carbon: The backbone of life

【The Crown (a fiction)】

· The Crown (edited and combined

· The philosophy of Wittgenstein

· Panama Canal and Darien Gap

· From No Human Is Illegal to No

· Why all belief systems (except

· A message from my daughter

· On the philosophy of Kant

· Is this true

【Virus and vaccine】

· Is it healthy to sterilize our

· Natural vaccines

· Consensus is not equal to trut

· New York City and coronaviruse

· Human beings as part of the ec

· A re-examination of models of

· Demographics and Pandemics

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· My World View

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· 李跃华医生注射液中苯酚的含量

· How our bodies maintain PH bal

· Why atomic groups usually are

【诗词(十一）】

· Only the powerful can proclaim

· Your pleasure is my pressure

· Are we getting more honest ove

· Understand and overlook

· A homage to our home

· Illusion and disillusion

· V is for Valley

· Dead stove

· Word and sword

· Yes is for yesterday

【旅行（二）】

· Koreshan State Park

· How Arizona can sustain such a

· Redwood, Eureka and Klamath (A

· A Short Trip to US

· Two different worlds

· Granville Island

【政治（二）】

· Why is Marxism so popular?

· How much money is in politics?

· The biological impact of the p

· The purpose of government mand

· Why are criminals pampered by

· Why democracy is so fragile?

· 疫情时代的人口

· Difference between US and Cana

· On being conservative

· On Churchill

【科学（八）】

· Why acid can break down molecu

· Blood types, immune systems an

· 实验室制造的新型病毒: 对人类的

· 从侏罗纪公园说起

· How to make revolutionary idea

· On clean energy industries

· Measurement of fertility rate

· Lie, belie, believe

· The most healthy food

【读书(二)】

· Fall of civilizations podcast

· 1984

· 读《夏商新考》

· East wind: Perspectives from t

· Elizabeth Barrett Browning: He

· Congo by Michael Crichton

· Kipling as a parent

· Some books about economics and

· How good were Charles Pearson’

· Pastor: The lord of pasture

· 打 call 的英语是什么？

· What is knowledge? What is fat

· Now and yesterday

· 桑干河和 sungei

· Heyday

· Farsi, Parsi and Persian

【旅行】

· A fancy meal

· Kayaking in Ucluelet

· Where is the exit?

· Your fear is smarter than you

· Be a tourist in our own city

· How many red rivers are there?

· Dams

· Differential impacts of slow a

· Getting bored?

· On the road

【读书】

· The story of civilization (Com

· Hillbilly Elegy

· Bernhard Riemann: Turning poin

· Galbraith on new ideas

· Psychology of finance (Some q

· Timeline by Michael Crichton

· Reading Money: Whence it came,

· Capitalism, socialism and demo

· Music: a mathematical offering

· A book about Riemann hypothesi

【经济（五）】

· To maximize utility is to maxi

· Pareto optimal: Whose optimal?

· comment on Nobel Prize in Econ

· 关于阿罗-德布理论

· Is gold standard viable in tod

· Beyond Growth: Toward a New Ec

· On creating wealth

· Renaissance and Reformation

· 贸易不平衡的起因和解决方法

· On universal basic income

【诗词（八）】

· Ex and in

· Apprehend and apprehensive

· Poems about old age

· Host

· Insulate

· The default choice is to defau

· Traps and trappings

· No comfort without fort

· Principle, principal and inter

· 狼

· Tribute

· Illusion and disillusion

· The gorges are gorgeous

· When June met August

【金融】

· Passive investment strategy an

· The size of your generation an

· Why it is optimal to be optimi

· Debt is an added risk

· Should arithmetic or geometric

· What constitute risk free asse

· A brief introduction to the se

· How to measure return

· The Big Short

【科学（七）】

· What is the meaning of life ex

· 一个不会摄影的人的感悟

· What we need, big data or big

· 进化理论的数学模型

· On inequality

· Grass from the old world and t

· The meaning of life

· Truth in science and religion

· Happy in the backyard

· Nagging from an old man

【语言（八）】

· H, 日和 Helio

· Duo and double means two

· Good, gooder; bad, better

· 相似的形状，相似的读音，相关的

· 家

· 新年话创新

· Language, languish, anguish

· 钟表

· How to learn English effective

· On amateur and academic resear

【经济（四）】

· How much we need to save for r

· How pension system destroys ou

· Shall we buy insurance?

· An Entropy Theory of Value

· Total value of gold and some

【音乐】

· Suo Gan

· Mainstream rappers

· A Candle in the Wind

· Raw and refined: Two versions

【经济（三）】

· Own something small wholly or

· Money as a performance enhance

· How much we pay for retirement

· How to reduce anxiety over fi

· How to trim a tree or an econo

· A critique of economic theory

· The most depressing (exciting)

· On the concepts of earning, in

· 数学：应用和乐趣 (修订版)

【诗词（六）】

· Spring up and fall down

· Envelope and develop

· Why highly educated women and

· On the concept of perfectness

· Reflection from a riddle

· On averaging denominators

· Integrating mathematical finan

· 苦难是最好的学校

· Read The need for a new public

· The earth is a gigantic batter

· Credible and Incredible

· Heretics are true believers

· Faith or good deeds

· 养儿还是育女？

· Should adult children stay wit

· Copulate, copy, populate

· Emergence and emergency

· Tart and top, start and stop

· S is about

· 同样的世界，不同的视角

【诗词（四）】

· On the wisdom of wisdom teeth

· Stalin Rap to Hitler and Mao

· Winter night in the north

· Winter in the deep north

· 你家的月亮

· Good bye, my friends

· Decadence and decay

· Norm, normal and Normans

· Bella and bellum

· Two meanings of like

· What is a theory?

· What is man?

【经济（二）】

· Reading James Galbraith’s The

· 为他人作嫁衣裳：贸易强国的共同

· 什么是内需不足？

· 关于持续的贸易不平衡

· A long tradition to connect th

· On persistent trade imbalance

· On green economy

· What are rights: Some reflecti

· On Risk Management

· 怎样计算股票的融资成本和预期回

【杂谈（二）】

· There is more brainwashing in

· 看女儿

· 女儿初为人母

· Weather and climate

· 老三的一篇短文

· When defects become an advanta

· Service of necessities and ser

· 女儿的帖子

· 荷花和塘泥

【科学（四）】

· Predictions in social sciences

· 数学的现状和未来

· Social structures: A perspecti

· 温度和情绪（temperature and t

· Learning, memory and decision

· The Least Action Principle: It

· When an electron falls to a pr

· 为什么鱼比肉更容易煮熟？

· 一篇关于The Unity of Science a

· 论所谓的正能量 (On being posit

· Burning and burn out

【健康（三）】

· Mentally stimulating

· On obsessive compulsive disord

· 吃盐和生育

· Ginger and gingerly

· Principle Based Medicine

· Energy consumption and cost

· On cortisol and other drugs

· Holmes stories: The number of

· 阅读The Unity of Science and E

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