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池塘里的污泥 2017-12-03 07:54:38

池塘里的污泥

默默地滋养着荷叶

望着风姿绰约的荷叶

人们常常感叹

出污泥而不染


小路旁的牛粪

默默地滋养着鲜花

望着娇艳欲滴的鲜花

人们常常感叹

鲜花插在牛粪上


都市里的低端人口

默默地建造着高楼大厦

望着耸立云端的高楼大厦

人们常常感叹

…… 





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2017-12-02 07:34:26

黄,箭的意思。廣场,就是演练射箭的地方。黄帝部落,就是善射的部落。


黄种人身材短小,近身肉搏占不到好处,就是因为善射,才使黄种人能够立足。大概因此,黄,既代表箭,又代表颜色。英语里,yellow 和 arrow, 发音类似,是否起源相同?


体育运动也一样。那些近身直接对抗的运动,象篮球,足球,黄种人总是差一点。而远距离,没有直接身体对抗,靠手的灵活性的运动,象兵乓球,羽毛球,黄种人经常占上风。


制造业靠手巧。东亚国家的制造业,在全球占优势,也和黄种人手巧有关。制造业的竞争,不是面对面的直接肉搏,只要在车间里,把每个零件加工好就行了。而面对面的竞争,黄种人少有建树。东亚人在东亚可以领导几十万人的公司,几亿人的社会。到了外面,甚少领导几十人的组织。







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Over and under 2017-12-01 15:41:11

We climb over a mountain
To have a great overview of a forest.
But to really understand a tree
We have to stand under a tree.

Over the top for too long
We might overlook important details.
Under the bottom for too long
We could undermine our confidence.

Everyday
We undertake mundane tasks.
Over time
We hope to overtake lofty competitors.














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Kind 2017-12-01 07:53:11


Why we are kind to some people?

Because they are our own kind.

Why we are kind to our children?

Because they are our own kinder.


Note: Kinder is children, such as in kindergarten.


同和童,一样读音






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Sun and moon 2017-12-01 06:16:38

Sun and moon 


Sun is solar.

It gives us solace.

Moon is lunar.

It drives us lunatic.




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The Least Action Principle: Its Mystery and Allure 2017-11-30 17:48:49

When you throw a stick to the lake, your dog will run to fetch it. However, it doesn’t always jump into the lake directly. If the stick is close to the shore, the dog will run along the shore first to be closer to the stick. Then it will jump into the water. It is faster for a dog to run on the shore than to swim in the lake. In general, dogs will take the path that minimizes the time to fetch the stick. How amazing they are! Dogs are so smart.

 

Light travels slower in water than in air, just like dogs move slower in water than on land. When light enter water from air, its path bends in a way that minimizes the time it takes from one point to another. How amazing it is! Light is so smart.

 

In general, any particle, when traveling through space, will minimize a physical quantity called action. This pattern is called the Least Action Principle. It seems all matter in the world is guided by this mysterious and universal economic principle. Nobody knows for sure why this is the case. But some great scientists, such as Planck, think the Least Action Principle is more fundamental than other physical laws. Many great works are inspired by this principle. For example, Feynman’s path integral method is an extension of the Least Action Principle to the quantum world.

 

Very often, the best way to understand science is through an economic principle, such as the Least Action Principle. Similarly, the best way to understand economics is through scientific theory, such as the thermodynamic theory. That is why I wrote the book, The Unity of Science and Economics.

 



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When an electron falls to a proton 2017-11-29 06:24:34

When an electron falls to a proton

When a stone falls to the earth, it might bump several times, and rest on the surface of the earth. When an electron falls to a proton, will it rest on the surface of the proton?  It seems not. Compared with gravitational force, electric force is much stronger. The high energy electron will circle around the proton, much like the earth circle around the sun.

According to Maxwell’s theory of electromagnetism, a circling electron shall emit electromagnetic wave, lose energy and collapse into the proton. This is much like a satellite returning to the earth’s atmosphere, losing energy from friction and in the end, collapsing into the earth. However this is not what happens to a hydrogen atom, which is a combination of proton and an electron. A hydrogen atom is very stable. This means Maxwell’s theory is not applicable when the scale is very small. People invented quantum theory to explain phenomena in microscopic world.

Now suppose an electron is attached to a large ball and move around a big circle. The moving electron must emit electromagnetic wave, according to Maxwell’s theory. Imagine the moving circle becomes smaller and smaller. In the end, it becomes the size of a hydrogen atom. Somewhere, the applicable law changes from Maxwell’s theory to quantum theory. How it happens? This troubles me a lot.



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Free 2017-11-26 06:01:29

Free

We all yearn to be free 
Free to live in the fanciest place 
Free to pursue the most expensive hobby 

Most of all
We want to be free
From the drudgery of unfulfilling job

But nothing is free 
To live in the fanciest place is not free 
To pursue the most expensive hobby is not free 

To be truly free 
One has to make others 
Work for you for free 

A society that is free
Always built on
Slavery

Ancient Greece was free 
It was also a society of 
Slavery

Modern Europe was free
It thrived on global 
Inequality 

When no one works for you for free 
You are no more 
Free 

































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Norm, normal and Normans 2017-11-25 04:18:30

Norm, normal and Normans 

Norm and normal might be originated from Normans. Normans were powerful in Britain. Normans set the norm. What Normans do are normal.

Frank might be originated from Franks.







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On Risk Management 2017-11-13 12:16:27

On weekends, we often go hiking, kayaking or swimming. Some of the activities are risky. Why do we enjoy risky activities? Why not just stay at home, which is much safer?

Much of the rewarding activities involve risk, such as exercising, hunting, wars, military, political or business wars. That is why we instinctively love many risky activities. We often try to reduce risk. In some places, there is a legal requirement to put on helmets while biking. This reduces bike injury. At the same time, this requirement discourage many people from participating biking. That is why biking in North America is not as popular as in many other places, where regulation is not as tight. Nowadays, there’s less enforcement on helmet wearing in some parts of North America to encourage broader participation of biking.

In businesses, does reducing risk always provide better outcome? Let us look at the risk management practices at Barrick Gold, the largest gold mining company in the world. Barrick Gold used to hedge its gold project with futures contracts, which greatly reduce its risk exposure to gold price fluctuations. This practice insulate the company from the decline of gold price.  But this practice also insulates itself from the rise of gold price. In the end, Barrick Gold unwinded all its futures positions, at great cost.

Reducing risk exposure used to be a popular practice. But more and more companies realize that reducing the exposure to risk also reduces the exposure to profit.

Forest fires occur very often in nature. We actively extinguish forest fires to protect property and life. As a result, forests often accumulate a lot of dead wood and old trees, which are prone to fire. When we try to extinguish every small fire, this could lead a large and difficult to control fire in the end. Similarly, we take many measures to reduce personal and professional risks for  the members of our society.  The reduction of everyday risk could leads to large and difficult to control risk in the end.

Next, we will turn our attention to personal finance risk management. When we take on a home mortgage, should we take a fixed rate or a floating rate mortgage? Many people take fixed rate mortgages, for they are perceived to be less risky. However, fixed rate mortgages are essentially an insurance, with the attached insurance cost. Most of the time, total payments from a fixed cost mortgage are much higher than that from a floating rate mortgage.

Today we are forced to pay higher and higher rate for car insurance, house insurance, pension deduction and many other deductions. More people view insurance as a burden instead of a risk management tool. When there’re too many risk management practices, the cost of risk management itself becomes a big risk.

 



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