The advantages of separate machines for separate things

Sometimes it seems that system administration goes in cycles. Right nowthe cycle is moving back towards consolidation of services on fewermachines, so I want to talk about the advantages of using separatemachines (whether virtual or physical) for different services, insteadof putting them all on the same machine with various degrees of clevertricks.

(The genesis of this entry was a comment on this entry , talking about how one could use onemachine instead of two to do the job I was tackling.)

First off, it


硬要輸下去

我教哲學導論時,會間中和學生玩遊戲,以增加他們的學習興趣。以下這個就很好玩:

我拿出一張十元美鈔,叫學生競投,由二十五美分(one quarter)起價,每一次叫價加二十五美分,價高者得。假如學生甲叫到三元時便沒有人出價

Vitamin

"Should I give my baby a few supplemental drops of vitamin D?" my sister asked me about the vitamins missing from breast milk. "The American Academy of Pediatrics said so."

"Though it may seem right for you to follow their recommendation," I murmured, not that enthusiastic, "it's optional in my personal opinion." There's really no scientific basis why I came to such conclusion. I have to admit it.

The simplest explanation would be that we're often bombarded

在地獄裏



是日賤精對話

「我飲紅酒一定要飲過千蚊嘅,如果唔係會唔舒服。」

「超~~~ 咁我可唔可以講,住一千呎以下嘅屋我會心胸狹窄?」

「.......................」

* * * * *

「呢隻十字牌脫脂奶好難搵到嚟買。」

iPhone + Book = Phone Book

當大家還在挖空心思,想第一時間設計出一個運用了最新科技的電子程式,然後以最石破天驚的新穎手法,將我們的所謂創意呈現出來。

但原來,技術固然重要,但創意的精要,原來始終離不開人性。

今年書展大概會有不少電子


Why feed readers are not good for skimming things

Here's a somewhat counterintuitive thing that I've come to believe: theconventional syndication feed reader design is the wrong thing for fast,casual skimming.

(I call this counterintuitive because feed readers were initiallypresented as a great way to deal with a a lot of feeds and feed entries,as just the thing to deal with the river of news and so on.)

With fast skimming, the goal is essentially to throw things away. Youwant to drastically limit your time consumption and limit the mentalload


鼓吹外的選擇

社會上有很多團體喜歡發表聲明,而不幸地,這些聲明所得到的回應通常都是嘲笑。很難怪,因為好端端的發個聲明,如果是人所共知的事實,就沒有人感到興趣,但如果衝擊了大家的常識,恐怕會招致無情的攻擊,但如果是反

不要和自己的文章太親

我每次要學生寫文,都千叮萬囑他們不要寫完第一稿便立即交給我,一定要修改;因此,我至少給他們三、四個星期的時間。不過,大部份學生一於少理,在限期前一、兩天才開工,草成急就,全班二十多篇裏至少有十篇八篇垃

一條熟蕉的自白

小時候,母親說,長雀斑的人皮膚都很好,不會出暗瘡,叫那個兩頰已有十多點雀斑的我別擔心。

結果,不能說她昆9我,因為她跟婆婆的皮膚都好,但我唔係囉,妖。

有雀斑的人都可以很漂亮很有型的,中學時Esprit的廣告,那些