Daily Archives: October 24, 2011

Background independence 2

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String theory 7.2

Although the physics of string theory can in principle be background-independent, perturbative formulations of this theory do not make this independence manifest because they require starting with a particular solution and performing a perturbative expansion about this background. Non-perturbative formulations such as matrix theory and AdS/CFT resolve that issue and are fully background independent.

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— Wikipedia on Background independence

2011.10.24 Monday ACHK

種子意念 7

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Over the years, I’ve learned that the first idea you have is irrelevant. It’s just a catalyst for you to get started. Then you figure out what’s wrong with it and you go through phases of denial, panic, regret. And then you finally have a better idea and the second idea is always the important one.

— Arthur van Hoff

— Founders at Work

2011.10.24 Monday ACHK

碩士 2.2

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這段改編自 2010 年 5 月 18 日的對話。

一般而言，一個學士要將自己升格為博士，前後要花六年左右。六年並不是一段短的時間。試想想，六年前，你們小學還未畢業；現在，你們就已經要準備考大學了。

千萬不要以為讀研究院的過程是「上學讀書」，那只是表面。實際上，讀研究院的難度等價於「上班做事」。「上學」和「上班」的主要分別是，「上班」要有自己的作品或者產品。無論你中途有多努力，學到多少東西，如果在指定時間內沒有確切的研究成果，你就不會得到一個博士學位。

那樣，你就即是從研究院輟學。在求職面試時，你很難向潛在僱主解釋，你為什麼不能畢業。

— Me@2011.10.24

To triumph we need results — publishable, applicable results.

– A Beautiful Mind (2001)

2011.10.24 Monday (c) All rights reserved by ACHK