However, Penrose and others made a shocking suggestion: perhaps you already have a quantum computer - in your head! They suggest that our brains (or at least parts of them) are quantum computers, and that this is a key to understanding consciousness.
Since decoherence spoils quantum effects, I decided to use the decoherence formulas that I'd been scooped on to check whether Penrose's idea really worked. I first did the maths for neurons...
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When I plugged in the numbers, the answer I got was "not very long at all", or to be more specific, about 10^-20 (then billionths of a trillionth) of a second...
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I also did the maths for another model that Penrose had proposed, where the quantum computation was done not by neurons but by microtubules, parts of the scaffolding in cells, and ... (查看原文)
I've switched from collecting stamps to collecting cool questions whose answer is 42. Here are my favourites so far:
1. At what latitude was the book written?
2. What's the radius of the rainbow, in degrees?
3. At most how many percent of the gas around it can a black hole gobble up?
Feeding a black hole turns out to be a lot like feeding a baby: most of the material comes flying back at great speeds... Black holes can eat at most 1-1/√3 ≈ 42% of the gas around them. (查看原文)
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2 有用 shotnotot 2019-01-24 17:00:42
前面废话比较多，06章渐入佳境……整体3.5吧，不知道是不是翻译问题，笼统的内容还是很多，不连贯，也相当晦涩。
16 有用 帕洛牛尔 2017-08-08 19:48:26
前边还不错，后面的民哲神神叨叨，名词、宾语也不定义就随意使用，不严肃，不谨慎，不科学，nonsense
3 有用 优游卒岁 2019-06-15 14:05:13
作者脑洞极其大，很让人开眼界，要想完全接受，恐怕还得细细思索。但该书与其说是科学的论证，毋宁说是哲学的沉思。很多的看法与结论，感觉已经超出了科学的范畴，特别是最后几章，基本上已经进入形而上的领域了。
4 有用 Tei 2018-08-11 15:10:01
i tried. / 这译名是为了吸引人吗
1 有用 静修 2017-09-21 22:32:27
脑洞大开