Category Archives: Now-here-I

難過

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A successful life does not result from chance, nor is it determined by fate or good fortune – but rather, through a succession of successful days.

— Ari Kiev

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日日難過日日過.

— Me

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2009.03.27 Friday copyright ACHK

今天暫時停止

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| Groundhog day | 偷天情緣

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劇情簡介

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壞脾氣的菲爾至小鎮報導_土撥鼠日_盛會，原本採防完預計返回城市，因風雪過大而停留於鎮上一日。隔日醒來，卻發現自己仍在2月2日當天，接著菲爾嘗試各種方法，包括拼命去死，每天醒來都會重覆過著同一天的生活，永遠沒有明天。

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Phil continues to try to learn more about Rita, and when he reveals his situation to her and the knowledge he’s gained about the town’s residents, she opens up to him and suggests he try to use his situation to help benefit the town. Phil uses her advice and the time loop to help as many people around town as possible, as well as bettering himself, such as by learning to play jazz piano and speaking French.

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最後菲爾明白到，與其冇方法要人鐘意自己，不如令自己嘅每一個同一日都過得充實同埋有意義，等到萬一可以脫離框框時會有個新嘅未來，於是佢利用無限嘅時間去學咗好多唔同嘅手藝去增值自己，同埋因為佢已經好熟咁知道每日喺邊度會有咩事發生，佢亦會積極咁週圍去幫嗰啲要幫忙嘅人；不過當中都有個小遺憾，就係佢唔可以阻止其他人生命嘅終結。

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喺某一個土撥鼠節，菲爾感動人心嘅現場報導，令到在場所有專注聽佢講嘢嘅人都大拍手掌；而喺哩日嘅夜晚，麗塔去到鎮上開早春慶祝會嘅社區會堂，只見到菲爾喺舞檯度彈住一手輕快兼且熟練嘅鋼琴，之後人人都爭住向佢打招呼，成為咗席上最閃耀嘅人；原來一日嚟佢幫過幾個女人架車換呔，所以幾個女人都走埋嚟多謝佢；佢幫過一個食嘢啃親嘅肥佬吐返粒核出嚟，於是兩公婆又走嚟多謝佢；佢鼓勵咗一對心大心細想結婚但又唔放心嘅情人，於是哩對準新人又嚟多謝佢……

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Phil wakes up the next day, and finds the time loop has broken; …

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— Wikipedia, edited by Me

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2008.11.04 Tuesday copyright CHK^2

Translation 2

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6.4.0 Create = teach or write or both

6.4.1 Create: Teach

6.4.2 Create: Write

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The basic theme is that whenever you cannot understand something, you should try to create that thing.

How to create?

Write. Write as if you are explaining the materials to someone else.

As physicist Gerar’td Hooft advised, when reading a physics textbook “… imagine how you would write those texts in a smarter way.”

Why is that you can understand a thing when you re-write your textbook?

It is because whenever you write, you have to translate the materials into your own language.

You are CREATING your OWN knowledge.
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2008.10.11 Saturday copyright CHK^2

Translation

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6.4 Create

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The basic theme is that whenever you cannot understand something, you should try to create that thing.

How to create?

Teach. Teach that thing to someone else.

Why is that you can understand a thing when you are teaching it to other people?

It is because whenever you teach, you have to translate the materials into YOUR OWN language.

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2008.10.09 Thursday copyright CHK^2

Blackboard 2

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6.3.1 Feynman’s Blackboard

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Physics
= Relativity + Quantum Mechanics
= 相對論加量子力學
= 深深深

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6.3.2 Quantum Mechanics | 量子力學

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When physicist Feynman was a student,
there were two versions of Quantum Mechanics.
They described the same thing
but in different mathematical languages.

One version was Heisenberg’s Matrix Mechanics (矩陣力學) , using matrices. Another was Schrodinger’s Wave Mechanics (波動力學), using differential equations.

Feynman could understand neither of them.
So he spent 8 years to create
his own version of quantum mechancis
in order to understand quantum mechanics [1].

Feynman’s version of quantum mechanics is now called
Feynman path-intergral. (路徑積分)

After Feynman’s death, [2] people found that Feynman had written some words on the left-hand top corner of his blackboard:

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“What I cannot create, I do not understand.”

不是由我自己想出來的東西, 我都不能理解.

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[1] Dyson, Disturbing the Universe (1979)
[2] “I’d hate to die twice. It’s so boring.” — Feynman’s last words

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2008.10.07 Tuesday copyright CHK^2

真誠朋友

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A：
人與人的關係，可能悲慘到什麼地步？

B：
你能想像得到的悲慘關係，世間都有；
你無法想像得到的悲慘關係，世間亦有。
沒有悲慘至極這回事。悲慘無極。

— Mr. Lee

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被朋友出賣, 屬正常.
被朋友遺棄, 屬自然定律.
可以難過, 但毋須傷心.

有朋友無條件地對你好, 是奇遇.
有朋友在你有難時為你出頭, 是奇蹟.
要更加好好珍惜.

你, 可以做到別人的真誠朋友嗎?

– Me

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2008.09.20 Saturday \copyright CHK^2

“Why not?”

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4.15 Shaw

1. You see things as they are and ask, “Why?” I dream things as they never were and ask, “Why not?” — George Bernard Shaw, Back to Methuselah (1921)

2. Reasonable people adapt themselves to the envirnoment; unreasonable adapt envirnoment to themseleves. Therefore, all human progress are made by unreasonable people. — George Bernard Shaw, Maxims for Revolutionists (1903)

3. Do not follow where the path may lead. Go instead where there is no path and leave a trail. — Muriel Strode ( ? )

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2008.09.12 Friday copyright CHK^2

Feynman

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4.11 A physics career

A young man wrote physicist Feynman a letter, asking how to know whether he was suitable for a physics career. Feynman gave the following reply:

“I say this. Try to find some friends who are somewhat interested in physics and try to discuss physics things with them. If you find yourself able to explain things in your own words, so that they are led to understand things from what you say, you are OK. Soon you will find yourself able to explain things to yourself. Otherwise, give up and plan for a different career. If you can’t find such friends, try to tutor elementary physics, and see how it goes.” [12]

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[12] Don’t you have time to think p.256

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2008.09.05 Friday copyright CHK^2

Hacker

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4.10 Hacker approach [10]

1. “a belief that even though you may not know all of what you need to solve a problem, if you tackle just a piece of it and learn from that, you’ll learn enough to solve the next piece – and so on, until you’re done.”

–Eric S. Raymond’s How To Become A Hacker

2. “… began doing just one thing ever which he had control.”

— Stephen Covey

3. “So start small, and think about the details. Don’t think about some big picture and fancy design. If it doesn’t solve some fairly immediate need, it’s almost certainly over-designed.”

— Linus Torvalds

4. “I have never been especially impressed by the heroics of people convinced that they are about to change the world. I am more awed by those who struggle to make one small difference after another.”

— Ellen Goodman

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[10] Hacker here means a highly skilled programmer, not a computer criminal.

“In academia, a “hacker” is a person who follows a spirit of playful cleverness and enjoys programming.”

– Wikipedia on Hacker (academia)

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2008.09.03 Wednesday copyright CHK^2

Hacker: Prequel

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4.10 Hacker approach [10]

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1. “a belief that even though you may not know all of what you need to solve a problem, if you tackle just a piece of it and learn from that, you’ll learn enough to solve the next piece – and so on, until you’re done.”

–Eric S. Raymond’s How To Become A Hacker

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1.5 “a belief that

even though you may not know all of what you need to solve a problem,

if you tackle just a piece of it and

learn from that,

you’ll learn enough

to solve the next piece

– and so on,

until you’re done.”

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10 Hacker here means a highly skilled programmer, not a computer criminal.

“In academia, a “hacker” is a person who follows a spirit of playful cleverness and enjoys programming.”

– Wikipedia on Hacker (academia)

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2008.08.29 Friday copyright CHK^2

以終為始 數學版 1

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4.7 Begin with the End in Mind

Author Stephen Covey had written an influential book : The Seven Habits of Highly Effective People.

The second habit is Begin with the End in Mind. Here is the mathematical version of it.

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Assume you have a goal, a dream, or anything like that. We call it to be the n-th step.

Clarify what your n-th step really is. Once done, ask yourself,

“What is the step before the n-th step?”

Clarify what your (n-1)-th step really is. Once done, ask yourself,

“What is the (n-2)-th step?”

Clarify what your (n-2)-th step really is. Once done, ask yourself,

“What is the (n-3)-th step?”

. . .

Clarify what your third step really is. Once done, ask yourself,

“What is the second step?”

Clarify what your second step really is. Once done, ask yourself,

“What is the first step?”

What is your first single step towards your goal that you can take action on right now, right here?

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後天將有中文版.

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2008.08.18 Monday copyright CHK^2

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P. S. 達明小明: 最後的十四天.