As of July 2010 LIGO has never conclusively detected any gravitational waves at all. Since Einstein’s General Relativity requires gravitational waves and the LIGO specifications ensure it is sensitive enough to detect them if they exist, LIGO’s failure forces the question whether General Relativity is a valid theory.
— Wikipedia on LIGO
2010.12.15 Wednesday (c) All rights reserved by ACHK
洋蔥自我 2
.
The deeper the consciousness, the more powerful it is.
The deepest layer is the Light.
The Light of everyone is the same.
— Me@2010.08.06
.
人同此心，心同此理
—
— Me@2010.08.09
.
.
2010.12.15 Wednesday (c) All rights reserved by ACHK
.
You cannot teach. You can only accelerate other people’s self-study.
— Me@2009.09.21
.
.
.
2010.12.15 Wednesday (c) ACHK
知己知彼 2
Always make new mistakes, 2.2
一般人怕做自己的主人，因為一般人怕犯錯，更怕犯錯後，不能推卸責任。其中一個主要原因是，一般人對自己不了解。
我現在不會「怕做自己的主人」，不會「怕犯錯」，因為我對自己有信心。或者，我根本毋須標籤自己「有沒有信心」。我應該直接描述自己為「情緒健康」。
「情緒健康」，並不是建基於自己「無所不能」，而是建基於知道自己什麼可以做到，什麼不可以。要知道「自己什麼可以做到，什麼不可以」，本身並不容易。你既要對主觀的自己了解得足夠深入，亦要對客觀的自然定律了解得足夠詳細，才可以準確評價，以自己當時的實力，能否達到任務要求。
所以，凡是自己嘗試全新的東西，而又沒有前人的類似經驗可以參考時，根本沒有可能在事前保證，自己會成功；「失敗」幾乎是必然的結果。
— Me@2010.12.14
Self knowledge is best learned, not by contemplation, but action. Strive to do your duty and you will soon discover of what stuff you are made.
— Johann Wolfgang von Goethe
2010.12.14 Tuesday (c) All rights reserved by ACHK
Working on string theory using the methods from loop quantum gravity was a lot of fun.
On one of the few occasions when I talked to Richard Feynman, he said that many theoretical physicists spend their careers asking questions that are only of mathematical interest. “If you want to discover something significant,” he told me, “only work on questions whose answers will lead to new experimental predictions.”
The key thing that Amelino-Camelia and others realized is that we can use the universe itself as an experimental device to probe the Planck scale.
— Loop Quantum Gravity
— Lee Smolin
2010.12.14 Tuesday ACHK
洋蔥自我
This essay is adapted from a dialogue on 2010.04.09.
surface self
inner self
inner inner self
…
inner^n self
…
The Light = inner^n self, when n is max.
…
The Light = inner^{n_{max}} self
All individuals has the same Light, the same “inner^{n_max} self”.
— Me@2010.12.13
The Light = 神明
2010.12.13 Monday (c) All rights reserved by ACHK
這段改篇自 2010 年 4 月 12 日的對話。
「按年份」做 past papers（歷屆試題）的意思是，你要「計時計分」（計時間、計分數）。「計時」的好處是，做 past papers 除了可以測試你對課程內容的了解外，還可以考驗你考試中途的心理技巧和時間管理。
而且，因為每年的 past paper 包含了幾乎所有 topics（課題），你做某一年的 past paper 時，就相當於幫自己溫了各個 topic。那樣，一方面，你可以掌握 topic 與 topic 之間的關係，從而把它們融會貫通；另一方面，你避免了「溫了一個 topic 後，就忘記了之前 topic」的情況。
— Me@2010.12.13
2010.12.13 Monday (c) All rights reserved by ACHK
The Whole Internet User’s Guide & Catalog, by Ed Krol, was published in September 1992 by O’Reilly. The Los Angeles Times notes that the Whole Internet User’s Guide and Catalog was the “first popular book about the medium” and “was later selected by the New York Public Library as one of the most significant books of the 20th century.” The title and format were inspired by Stewart Brand’s Whole Earth Catalog.
— Wikipedia on Whole Internet User’s Guide and Catalog
2010.12.12 Sunday ACHK
.
The first known library of its kind to gather a serious collection of books from beyond its country’s borders, the Library at Alexandria was charged with collecting all the world’s knowledge. It did so through an aggressive and well-funded royal mandate involving trips to the book fairs of Rhodes and Athens and a (potentially apocryphal or exaggerated) policy of pulling the books off every ship that came into port. They kept the original texts and made copies to send back to their owners.
— Wikipedia on Library of Alexandria
.
.
.
2010.12.12 Sunday ACHK
by Jim Collins
Hedgehog Concept: Three overlapping circles: What makes you money? What could you be best in the world at? and What lights your fire?
— Good to Great
Good to Great is the clearest book I have ever read.
— Me@2010.12.12
2010.12.12 Sunday ACHK
一般人怕做自己的主人，因為一般人怕犯錯，更怕犯錯後，不能推卸責任。
問題是，根據自然定律，一個人要在某一方面成功的話，一定先要在該方面失敗過很多次才可以。害怕犯錯，相當於刪除自己成功的機會，放棄自己「潛在未來」的最美好版本。
— Me@2010.12.11
He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.
— Friedrich Nietzsche
2010.12.11 Saturday (c) All rights reserved by ACHK
It is a complete surprise that gravity emerges in string theory. Indeed, none of the vibrations of the classical relativistic string correspond to the particle of gravity. It is a truly remarkable fact that we find the particle of gravity among the quantum vibrations of the relativistic string.
This book will explain in detail how string theory, at least in its simplest form, is nothing but the quantum mechanics of classical relativistic strings.
— A First Course in String Theory
— Barton Zwiebach
2010.12.11 Saturday ACHK
.
More open alternatives to Wikipedia.
Deletionists rule Wikipedia. Ironically, they’re constrained by print-era thinking. What harm does it do if an online reference has a long tail of articles that are only interesting to a few people, so long as everyone can still find whatever they’re looking for? There is room to do to Wikipedia what Wikipedia did to Britannica.
— Startup Ideas We’d Like to Fund
— Paul Graham, July 2008
.
.
.
2010.12.11 Saturday ACHK
時間自我觀
This essay is adapted from a dialogue on 2010.04.09.
(Kinon: Your theory can explain something that “one-mind theory” cannot.)
Yes.
(Kinon: That is very interesting. You told me about “playing politics with oneself” several years ago (2003). For example, if you know that your tomorrow-self will be likely to be lazy, you present-self have to figure out how to prevent your tomorrow-self from being lazy.)
I consider self-at-different-time = different selves.
(Kinon: I understand what you mean.)
I understand what you understand.
— Me@2010.12.10
2010.12.10 Friday (c) All rights reserved by ACHK
這段改篇自 2010 年 4 月 8 日的對話。
其實，我已經 transcend 了時間。「未來」和「過去」可能都是固定的。有沒有這個概念？
（CN：有。我有這個想法。有些東西，好像是我事先已經知道了一部分。）
「未來」雖然不是好像「過去」一樣，是百分百固定的，但是，有一定程度是。「過去、現在、未來」，對我來說，不是完全不同的東西。
我是任何年齡的自己。
（CN：那又怎樣？）
那會好神奇。那我就不會怕「變老」。我現在可以想到任何年齡的東西。我可以隨時在千分之一秒內，調節自己的心理去到任何年齡，從而和不同年齡的人對話。
— Me@2010.12.10
2010.12.10 Friday (c) All rights reserved by ACHK
In Form 2, my music teacher mentioned that point, line, plane and cube are the 0, 1, 2 and 3 dimension. Time is the 4th dimension.
That sentence has changed my whole life.
— Me@2009.09.16
2010.12.10 Friday (c) All rights reserved by ACHK
This essay is adapted from an dialogue on 2010.04.09.
I have transcended past-present-future in my mind. The future may be as fixed as the past.
(Kinon: Determinism?)
I have transcended Free-Will/Determinism. Like “finite” and “boundless”, they are not necessarily mutually exclusive. Our universe is finite and boundless, just like the surface of the Earth. The surface of the Earth is both finite and boundless.
(Kinon: I agree that Free-Will and Determinism are not necessarily mutually exclusive. They may be the same thing.)
NO! It should be “They may be two aspects of the same thing.”
— Me@2010.04.09
2010.12.09 Thursday (c) All rights reserved by ACHK
.
Technology is a system of ignoring science effectively.
If a user needs to understand a lot of science in order to use a technology, that technology is a failure.
— Me@2009.12.15
.
.
.
2010.12.09 Thursday (c) ACHK
真正的問題是，大部分受僱人士，每天上班時，要花大部分時間，去處理因為上司愚蠢決定，而引發的無聊事情。
那為什麼大部分人仍然會選擇受僱呢？
其中一個主要原因是，一般人怕自己做決定，因為「自己做決定」，代表自己要負上責任和承擔後果。受僱上班的話，有上司的指示，表面上，那就沒有那麼容易錯；實際上，即使錯了，也是上司的錯，不是自己的錯。
一般人怕做自己的主人，因為一般人怕犯錯，更怕犯錯後，不能推卸責任。
— Me@2010.12.09
2010.12.09 Thursday (c) All rights reserved by ACHK
隨行不隨心 | 隨行不隨想 2
Our body have no free will. Free will is within our minds. We modify our minds to give meanings to our physical actions.
— Me@2009.11.14
You do not have free will in terms of hardware. You have free will in terms of software.
— Me@2009.11.16
2010.12.09 Thursday (c) All rights reserved by ACHK
Physics Town 
You must be logged in to post a comment.