Daily Archives: December 15, 2012

Nothingness

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Nothing is better than having a good wife. 

Having a toothbrush is better than having nothing.

—

Therefore, having a toothbrush is better than having a good wife.

Nothing is better than having a good wife. 

{} > {good wife}     (wrong)

{x : x > good wife} = {}     (correct)

Having a toothbrush is better than having nothing.

{toothbrush} > {}

The is‘s have two different senses here. The first “is better than” is for comparing objects. The second “is better than” is for comparing sets. An object and a meta-object should not be put together for comparison.

— Me@2012-04-02 10:46:22 AM

2012.12.15 Saturday (c) All rights reserved by ACHK

SICM

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這段改編自 2010 年 4 月 3 日的對話。

（安：我怎樣把 mechanics（力學）學得好一點？）

哪一門力學？經典力學，還是量子力學？

（安：經典力學。）

你想應用在哪些地方？

（安：暫時純粹為了求知和娛樂。）

那我介紹一本名著給你。它叫做《SICM》（Structure and Interpretation of Classical Mechanics）。它免費發布於 MIT（麻省理工學院）的網站。

這本書的主要好處是，它會要求你，透過編寫簡短的電腦程式，來解決力學問題。反過來說，你亦可以透過解決力學問題，來練習 programming（電腦編程）。

— Me@2012.12.15

2012.12.15 Saturday (c) All rights reserved by ACHK