Category Archives: amaths-wars

Lectures 2

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Many of the Walter Lewin Lectures on Physics at MIT have been shown for over six years on UWTV in Seattle, reaching an audience of about four million people. Lewin personally responded to hundreds of e-mail requests that he received per year from UWTV viewers. For fifteen years he was on MIT Cable TV, with programs aired 24 hours per day helping freshmen with their weekly homework assignments. Lewin also teaches video courses on Newtonian Mechanics, Electricity and Magnetism, and Vibrations and Waves, which can be viewed from the MIT OpenCourseWare web site. His MIT lectures for science teachers and for middle school students can be viewed on MIT World.

— Walter Lewin Lectures on Physics

— Wikipedia

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2007.12.29 Saturday CHK^2

Lectures

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It’s impossible to learn very much by simply sitting in a lecture, or even by simply doing problems that are assigned.

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I think, however, that there isn’t any solution to this problem of education other than to realize that the best teaching can be done only when there is a direct individual relationship between a student and a good teacher — a situation in which the student discusses the ideas, thinks about the things, and talks about the things.

— Feynman Lectures on Physics

— Richard P. Feynman

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2007.12.27 CHK^2

迷宮

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1.1 專博之爭 1.2 第二是沒有意思的

2.1 軟硬智力 2.2 提昇軟硬智力 2.21 提昇硬智力 2.22 硬件常識

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2.23 提昇軟智力 2.231 作業系統 2.232 公用程式 2.233 主題程式

2.2331 程式情境 2.2332 情境程式

2.2341 程式員 2.2342 Brain programmers 2.235 寫程式 2.236 寫 寫程式 程式

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3.1 幻想智力

3.11 洗衣機與電飯煲

3.12 鱷魚與長頸鹿

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3.21 迷宮

走迷宮是不是勤力就可以趕快完成呢?

不可以.

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走迷宮時, 只要選錯一條分叉路, 即可令你前功盡廢.

那走迷宮怎樣可以高速完成?

直昇機.

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只有直昇機可以令你看到迷宮的脈絡.

只有看到脈絡才可以有效率地完成迷宮.

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3.22 G. Maths by A. Maths

現實中的直昇機在哪裡?

深一點的學問.

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會考時有兩科數學: G. Maths 和 A. Maths.

A. Maths 很深.

但是它的好處是令人覺得 G. Maths 很淺.

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為什麼有這樣的效果?

因為 A. Maths 比 G. Maths 深了一層,
為你提供了一個脈絡去了解 G. Maths.

讀G. Maths 時多了很多上文下理.

(G. Maths = General Mathematics; A. Maths = Additional Mathematics)

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2007.12.12 Wednesday \copyright CHK^2

Jobs

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When I was 17, I read a quote that went something like: “If you live each day as if it was your last, someday you’ll most certainly be right.” It made an impression on me, and since then, for the past 33 years, I have looked in the mirror every morning and asked myself: “If today were the last day of my life, would I want to do what I am about to do today?” And whenever the answer has been “No” for too many days in a row, I know I need to change something.

— Steven Jobs:

Remembering that I’ll be dead soon is the most important tool I’ve ever encountered to help me make the big choices in life. Because almost everything — all external expectations, all pride, all fear of embarrassment or failure – these things just fall away in the face of death, leaving only what is truly important. Remembering that you are going to die is the best way I know to avoid the trap of thinking you have something to lose. You are already naked. There is no reason not to follow your heart.

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2007.12.09 Sunday CHK^2

電飯煲

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1.1 專博之爭 1.2 第二是沒有意思的

2.1 軟硬智力 2.2 提昇軟硬智力 2.21 提昇硬智力 2.22 硬件常識

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2.23 提昇軟智力

2.231 作業系統

2.232 公用程式

2.233 主題程式 2.2331 程式情境 2.2332 情境程式

2.2341 程式員 2.2342 Brain programmers

2.235 寫程式

2.236 寫 寫程式 程式

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3.1 幻想智力

副題: 如何用小智力做一些本來要有大智力才能做到的事情

3.11 洗衣機與電飯煲

一個洗衣機無論怎樣勤力, 都不能煮飯好過電飯煲.
同理,
一個電飯煲無論怎樣勤力, 都不能洗衣勝過洗衣機.

致勝之道
在於
洗衣機要知道自己是洗衣機,
專心於洗衣方面發展;
電飯煲要知道自己是電飯煲,
專心於煮飯方面發展.

3.12 鱷魚與長頸鹿

人生的遊戲何其多,
記住,
要選擇自己會贏的遊戲.

如果你是魚, 你要同人鬥游泳;
如果你是長頸鹿, 你要同人鬥高;
如果你是豹, 你要同人鬥快.

思考題: 怎樣可以知道自己是什麼動物呢?

(Modified by me, from the teaching of Mr. Lee)

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2007.11.27 Tuesday (c) CHK^2

Mathematician | Physicist | Engineer

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… and in general mathematicians tend to behave like fermions, i.e. avoid working in areas which are too trendy whereas physicists behave a lot more like bosons, which coalesce in large packs and are often over-selling their doings, an attitude which mathematicians despise.

— Advice to the beginner

— Alain Connes

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A good scientist is a person with original ideas. A good engineer is a person who makes a design that works with as few original ideas as possible. There are no prima donnas in engineering.

— Disturbing the Universe

— Freeman Dyson

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2007.11.22 Thursday (c) CHK2

寫寫 程式 程式

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1.1 專博之爭 1.2 第二是沒有意思的

2.1 軟硬智力 2.2 提昇軟硬智力 2.21 提昇硬智力 2.22 硬件常識

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2.23 提昇軟智力

2.231 作業系統

2.232 公用程式

2.233 主題程式 2.2331 程式情境 2.2332 情境程式

2.2341 程式員 2.2342 Brain programmers

2.235 寫程式

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2.236 寫 寫程式 程式

The bonus part is that you can be other people’s programmer and teach them how to program.

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2007.11.22 Thursday (c) CHK2

Master

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1.1 專博之爭 1.2 第二是沒有意思的

2.1 軟硬智力 2.2 提昇軟硬智力 2.21 提昇硬智力 2.22 硬件常識

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2.23 提昇軟智力

2.231 作業系統

2.232 公用程式

2.233 主題程式 2.2331 程式情境 2.2332 情境程式

2.2341 程式員 2.2342 Brain programmers

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2.235 寫程式

Finally, you become your own programmer.

“To follow the path:

look to the master,
follow the master,
walk with the master,
see through the master,

become the master.”

— Zen proverbs

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2007.11.21 Wednesday (c) CHK2

Maths | Physics || Physics | Maths

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The most powerful method of advance
that can be suggested at present is
to employ all the resources of pure mathematics in attempts
to perfect and generalize the mathematical formalism
that forms the existing basis of theoretical physics, and
after each success in this direction, to try to interpret the
new mathematical features in terms of physical entities…

— Dirac in 1931

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2007.11.20 Tuesday CHK2

Programmers

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1.1 專博之爭 1.2 第二是沒有意思的

2.1 軟硬智力 2.2 提昇軟硬智力 2.21 提昇硬智力 2.22 硬件常識

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2.23 提昇軟智力

2.231 作業系統

2.232 公用程式

2.233 主題程式 2.2331 程式情境 2.2332 情境程式

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2.2341 程式員

2.2342 Brain programmers

Get some GREAT teachers.

A GREAT teacher makes 90% of all the differences.

Your overall brainpower is shaped by a few GREAT teachers.

Your life is shaped by a few GREAT teachers.

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2007.11.20 Tuesday (c) CHK2

程式

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1.1 專博之爭 1.2 第二是沒有意思的

2.1 軟硬智力 2.2 提昇軟硬智力 2.21 提昇硬智力 2.22 硬件常識

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2.23 提昇軟智力

2.231 作業系統

2.232 公用程式

2.233 主題程式 2.2331 程式情境 2.2332 情境程式

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2.2341 程式員

有些電腦程式是市面上買不到的,
要聘請程式員度身訂造,
專為某個特別應用而寫新的程式.

同樣, 有此人腦程式是不容易由自己安裝的. 原因可以是

a. 市面上根本沒有適合自己腦子的程式;
b. 即使有, 自己也不知道哪裏找.

這時候, 你需要請人為你度身訂造程式.

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2007.11.19 Monday (c) CHK2

間書原理

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Chapter 7 Section 7.2

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yin_and_yang.thumbnail

public domain image from Wikipedia

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陽之極為陰 陰之極為陽 — 漫畫榮格

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我們平日看書時會間書: 用紅筆間低重要的句子.

間書的一個極端是一句也不間. 那我們就不知哪些是重要句子.

間書的另一個極端是句句間. 那我們也不知哪些是重要句子.

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2007.11.18 Sunday (c) CHK2