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Blue Army Red Army

May 17th, 2011 by ET

Thoughts on Survival of the Fittest

March 30th, 2011 by ET

The theory of the survival of the fittest suggests that species adapt to the environment to survive. For example, insects may develop colorful patterns on their wings to scare off potential predators. The biological foundation for such changes and adaptations can be gene mutation.

Then a question arises: suppose mutation can trigger some effects so that an animal suddenly becomes poisonous. Why the poisonous feature cannot stay like the colorful pattern on insects? Fortunately not, if yes, then many things we see today will be poisonous!

One explanation is that the colorful patterns are salient features, so they can immediately be effective to protect the insects. In the long run, this feature can be passed onto future generations. The poisonous feature is not salient. So a wolf will continue to eat that poisonous rabbit and there is no chance for the poor rabbit to pass on this great feature.

In a sense, these poisonous rabbits are like experience goods. Before you consume them, there is no way for you to know their quality. You only learn about their quality after you eat them, but then it is often too late for you to regret. It is a blessing for us that there is no review systems (e.g., those similar to Yahoo movies, Yelp, etc.) in nature. If yes, then the poisonous rabbits can pass on the feature and today we will have to face many more poisonous animals.

My Social Graph on Facebook

February 13th, 2011 by ET

My Kung Fu Daughter

November 27th, 2010 by ET

Took when she was 1 week old.



November 20th, 2010 by ET

以下轉載自 新浪中醫頻道:
如今不孕不育在我國已經成為「通病」。 近五年來,中國每年都有上百萬對的夫妻因不孕不育而去醫院就診。






Clock Tower

November 18th, 2010 by ET


November 9th, 2010 by ET

City Hall

October 15th, 2010 by ET

Typhoon is coming

September 20th, 2010 by ET

Tsinghua Gate

September 18th, 2010 by ET

You are visitor number several since September 1, 2001

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