Hackers and Painters II

1. How to be a good teacher
2. Writing Briefly
3. How to do what you love
4. The Age of the Essay
5. How to Make Wealth
6. Good and Bad Procrastination
7. Is it Worth Being Wise?
8. The Word “Hacker”
9. Great Hackers
10. How Art Can Be Good
11. Hackers and Painters
12. Design and Research

13. Why Nerds are Unpopular
14. What you can’t say
15. The Hundred-Year Language
16. Microsoft is Dead
17. Microsoft is Dead: The Cliffs Notes
18. Why to Not Not Start a Startup
19. Learning from Founders
20. Web 2.0
21. Better Bayesian Filtering
22. Revenge of the Nerds

— Organized by Me@2007.07.03

2010.02.15 Monday ACHK

西瓜

有些句子有意思,有些句子沒有意思。而有意思的句子之中,可再分成兩類:analytic propositions(重言句/恆真式)和 synthetic propositions(綜合句)。

重言句只是概念之間的關係(relations of ideas)。例如:

1. 冰箱內有西瓜或者沒有西瓜。

2. 我爺爺是我爸爸的爸爸。

重言句的好處是它絕對準確。不好處是它沒有任何信息內容,對世界沒有任何描述。

綜合句是對事實的陳述(matters of facts)。例如:

1. 冰箱內有西瓜。

2. 愛因斯坦是我爸爸的爸爸。

綜合句的不好處是有可能錯。好處是它有信息內容,對世界有描述。

邏輯學和純數學是重言句系統。

物理學和其他科學是綜合句系統。

— Me@2010.02.15

2010.02.15 Monday (c) All rights reserved by ACHK

PageRank

The name “PageRank” is a trademark of Google, and the PageRank process has been patented (U.S. Patent 6,285,999). However, the patent is assigned to Stanford University and not to Google. Google has exclusive license rights on the patent from Stanford University. The university received 1.8 million shares of Google in exchange for use of the patent; the shares were sold in 2005 for $336 million.

— Wikipedia on PageRank

2010.02.15 Monday ACHK