尋找時間的定義 1.2
SICM, 3.2 | SICP, 2.2
這段改編自 2010 年 4 月 10 日的對話。
涉獵多門知識，即使對於「本行」的發展，也會有意想不到的幫助。
例如，我對「什麼是時間」這個物理問題，有極之大的興趣。我想像，如果我只閱讀和研究物理，可能窮一身的時間，也沒有寸進。
估不到，在大概 2006 年，我從一本電腦界的神作中，得到了靈感，開始對「時間定義」有一點理解。然後在今年（2010），再加上我在大學時代時，長期訓練得來的「語理分析」功力，我破解了，「時間」的大部分意思。
（安：你上星期也有提及過，那本電腦界的神作。）
又例如，如果一個人過身後，仍然以某種形式存在的話，究竟確實是以哪一種，或者怎麼樣的形式來存在呢？
從物理和電腦知識中，我得到了一些關鍵靈感。
「靈感」中的「靈」，其實就是解「靈活」、「靈通」，即是有大量和多類型的資料或消息來源。
— Me@2014.06.03
2014.06.03 Tuesday (c) All rights reserved by ACHK
Dear Giotis, they were formally at least 99.9999999% certain, that’s what the 6-7 sigma confidence level means, and even when some possible “qualitatively different errors” are considered as possibilities, their certainty is still vastly higher than 99%.
As I wrote in an update, Pryke of BICEP2 says that the rumors about the planned retractions by BICEP are pure bullshit.
99% is no real certainty. It’s just a laymen’s myth that 99% is high enough to treat something as a certainty. It’s less than 2 sigma. In hard sciences, if something comes out to confirm a theory at a 99% level, a scientist doesn’t consider it even as significant evidence to be carefully studied!
— Lubos Motl
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| This file is licensed under the Creative Commons Attribution 2.5 Generic license. Author: Mwtoews |
In statistics, the 68–95–99.7 rule, also known as the three-sigma rule or empirical rule, states that nearly all values lie within three standard deviations of the mean in a normal distribution.
68.27% of the values lie within one standard deviation of the mean. Similarly, 95.45% of the values lie within two standard deviations of the mean. Nearly all (99.73%) of the values lie within three standard deviations of the mean.
— Wikipedia on 68–95–99.7 rule
2014.06.03 Tuesday ACHK
