Archive for 2009 年 04 月

obama

四月 29, 2009

Sizing Up Obama’s First 100 Days

That was the house built on sand. His house built on rock had five pillars – new rules for Wall Street, new initiatives in education, alternative energy and health care, and eventually budget savings that would bring down the national debt –

我想不止我一個懷疑,obama政府能不能同時做這麼多事情。有預感美國要不變得非常好,要不變得非常糟糕….

廣告

Mac vs PC war, 更新

四月 19, 2009

之前 MS 的 PC hunter 廣告一石激起千重浪,Mac和PC fans 各自交鋒,以下是 Mac fan 的辯白:

Mac vs. PC: What You Don’t Get for $699 – BusinessWeek

Yes, $699 beats the $2,800 you’d pay for a Mac with a 17-in. screen. But when it comes to PCs, there’s still a great deal more to buy.

First, there’s security software. The PC in question comes with a 60-day trial Norton Internet Security 2009 from Symantec (SYMC). After the trial runs out you’ll pay Symantec $50 a year to protect your PC (and up to two others in your home) from all the nasty viruses, worms, and other malware lurking on the Internet. That’s $150 over the three years Lauren is likely to hold on to her PC. No need for antivirus on the Mac.

Next, let’s say something goes wrong on the computer once the warranty expires and that it requires the intervention of a third party. Geek Squad will charge you $129 just for a diagnosis. A diagnosis from the Genius Bar in Apple’s retail stores? Free.

Then there’s iLife, the suite of multimedia tools that comes standard on the Mac. With iLife you can organize photos and home movies and turn them into watchable DVDs. Garageband helps you create your own music and another iLife element aids in Web site creation.

免費的防毒軟件不少,電腦有問題不一定要找 Geek Squad…. 至於所謂的多媒體軟件,免費的大把。最後到 Apple 官方發言人:

“A PC is no bargain when it doesn’t do what you want," Apple spokesman Bill Evans says. “The one thing that both Apple and Microsoft can agree on is that everyone thinks the Mac is cool. With its great designs and advanced software, nothing matches it at any price." Microsoft declined to comment.

其實簡單的經濟原理告訢我們,PC 的性價比一定比 Apple 高。如果一個人決定買 Apple,就只能從一個生產商買;但若決定買 PC, 品牌有很多選擇。同一檔次的電腦都有很多競爭,價格必定不斷往成本價方向走;但是 apple 只是 marketing 的考慮。

另外,但PC 一樣有很多 high end 的型號。用 $2,800的話,可以買兩部。

頹相

四月 16, 2009

廣告同現實,真係有咁大對比?

不過又人幾多人食包之前會拿出來觀賞一下?好多人一打開就食,先叫快餐。

Lifehacker – Avoid Unhealthy Junk with a Fast-Food Reality Check – Health

隱形肢體

四月 15, 2009

The Mind-Body Problem: Scientific American

In Annals of Neurology, the researchers, led by Asaid Khateb, report the case a 64 year-old librarian who began to experience a supernumerary phantom limb four days after being hospitalized with a stroke. The phantom, she said, started from the elbow of her left arm (which had been paralyzed by the stroke) and felt “just like a real hand," but was “weightless." “transparent" and “thinner" than her actual arms. The patient also told the doctors that the phantom was not experienced permanently, but only when she intentionally “triggered" it. Furthermore, it was anatomically correct and functional—she said that it had flexible, independently moveable joints at the elbow, wrist and fingers, and claimed that she could not only see it, but also feel it and purposefully move it.

The doctors placed her into a brain scanner, and asked her to scratch her cheek with her phantom limb. Remarkably, the scan confirmed the patient’s subjective reports. When she willed the phantom limb into action, the doctors observed an increase in the activity of the right motor cortex. When she said that the phantom was approaching her face, they observed an increase in visual cortical activity. And when she told them that the limb had made contact, they observed increased activity in the region of somatosensory cortex corresponding to the cheek. The patient’s brain had generated a virtual simulation of a fully functional arm, which had been incorporated into the body image and which ran alongside the neural representations of her real arms. In her mind, this virtual arm was just as real as her actual arms.

interesting

Live search algebra

四月 13, 2009

Lifehacker – Let Live Search Do Your Algebra – Live Search

OMG!  幾時可以做微積分,就不用 mathematica 了。

Mac

四月 13, 2009

從來沒有興趣用Mac,見過有部 macbook,連 projector video output 都要另外花錢買。

PC 的生產商多,一般的 PC 價錢比 mac 便宜,功能比 mac 強。

apple 的 ipod 也是,明明只是普通不過的 mp3 player,都要賣 $100-$200,非常 overpriced。

小紅帽故事

四月 12, 2009

陳一諤

四月 12, 2009

對於六四,過了這麼多年,應該要有討論空間。

通常大陸較年輕的人(約75後)認為中央政府的做法大致正確;香港人則覺得罪無可恕。然後一個有趣的現像是,香港人覺得大陸人被中央洗腦,大陸人覺得香港人被植民地政府洗腦。這兩個說法都不無道理:人的理智和獨立思考能力遠低於我們想像的。

其實想想,如果你是大陸人,見證著六四以後的改革開放,堅持資本主義,普遍地每家每戶的生活大幅改善,你又會不會持支讓歷史重新來一次,看看學生勝利的結果會怎樣?人都是以成敗論英雄。

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港大學生會長質疑柴玲走佬 – 新浪網 – 新聞

程翔斥誇大學生錯誤 突顯六四鎮壓不可避免

【明報專訊】六四步入20周年,新一代香港和內地學生的看法都未必堅持平反六四。港大學生會社會科學學會昨舉辦六四論壇,有港大學生質疑為何有民運領袖在六四屠城前逃走,更形容其中一名領袖柴玲是「走佬學生領袖」。在場堅持平反六四的程翔反駁說:「把(參與六四)學生的錯誇大,從而突顯政府鎮壓是不可避免,請這班人收聲。」

港大學生會社會科學學會昨舉辦「不願置平‧流連忘反?」的六四論壇,程翔、民主黨副主席劉慧卿和港大學生會會長陳一諤擔任主講嘉賓。台下的蘇同學指出,為何有學生領袖在六四屠城前臨陣退縮,「我覺得好痛心」。新聞工作者程翔回應說,明白當時參與民運的學生有爭拗,他認為很多人想把學生的錯誤誇大,利用學生的幼稚和缺乏經驗,去為屠城洗脫罪行。他指出,學生年少不成熟,但成立多年的共產黨卻開動30萬大軍、用坦克車和裝甲車四面八方對付手無寸鐵的學生,「學生的錯,與執政者的罪,是不可相提並論」。

陳一諤:應尊重不同聲音

自稱知道自己被冠以「隱形左派」的陳一諤說,大家應尊重不同聲音。他點名指當年柴玲便是「走佬學生領袖」,認為中央政府可能在鎮壓上有問題,但其實可理性解決:「為何(最終)不可以理性方法解決呢?就是關乎班學生領袖,究竟他們是否存有私心?究竟他們是否有其他勢力的影響下,令到他們作出一個不應該有的決定呢?」

內地學生曲同學指出,港大民主牆上有一幅示威者躺在地上、旁邊有單車的相片:「這就說成是tank(坦克車)壓過死人的畫面,為何這個tank壓完之後,會有人樣呢?那些單車還是單車的樣子呢?而不是一堆廢鐵?」陳一諤又指,應透過辯論,了解該幅相中的屍體究竟是解放軍還是平民。

李慧琼:「走佬」評論不公道

陳氏又說,港大將於本月中為六四舉行公投,分別會就「平反八九民運」和「就六四屠城負上責任」兩項動議公投。但他拒絕透露自己投票意向,並指用「六四鎮壓」字眼較「六四屠城」好,因前者是客觀事實,後者是主觀描述。民建聯李慧琼其後對本報表示,雖尊重學生有言論自由,但批評有港大學生形容當年的學生領袖是「走佬學生領袖」,感覺不好:「這樣很不公道,因為那是生命攸關。」

cpu

四月 11, 2009

Intel Begins Applying ‘Stars’ Ratings to Microprocessors – Lab Notes by ExtremeTech

以前 cpu 型號好簡單:286, 386, 486… 數字越大就越快。但係不知從什麼時侯開始,就有 pentium, celeron, core, core2, core 2 duo…. GHz 大不代表快,還要看L1 L2 cache, 多少個 core…  真是頭都暈。無可否應 cpu 產品這幾年間有很多突破,新功能層出不窮,但像我這樣的用家根本不 care,只要用起來夠快就好。

不過 intel 將推出的 star rating有個問題,就是 cpu 越出越快,現在是五星,明年要轉四星?

還有要看你用電腦來做什麼。如果只是上網打字,三星和五星的分別恐怕不大。