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...
...
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...
...
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)
凯闻
浙江人民出版社2017版
MV流口水
浙江人民出版社2017版
lavida77
浙江人民出版社2017版
豆妈
浙江人民出版社2017版
Rigel
浙江人民出版社2017版
0 有用 世界尽头走地鸡 2018-12-08 02:27:36
我真是一点一点啃完的...前面还行，后面一看到mathematical这个词就自动屏蔽【完全不懂数学是什么鬼...最后面居然延伸到奇点去，刚好继续看奇点临近【。
0 有用 长风 2019-02-04 08:33:08
最近几十年理论物理的进展，读的好累，但是回想一下挺有意思的，特别是Level IV multiverse真是脑洞大开，更大尺度上宇宙的本质是数学结构的各种组合。科幻小说作家要努力跟上了。
0 有用 眼睛 2020-01-24 07:12:49
failed
0 有用 眼睛 2020-01-24 07:12:49
failed
0 有用 长风 2019-02-04 08:33:08
最近几十年理论物理的进展，读的好累，但是回想一下挺有意思的，特别是Level IV multiverse真是脑洞大开，更大尺度上宇宙的本质是数学结构的各种组合。科幻小说作家要努力跟上了。
0 有用 世界尽头走地鸡 2018-12-08 02:27:36
我真是一点一点啃完的...前面还行，后面一看到mathematical这个词就自动屏蔽【完全不懂数学是什么鬼...最后面居然延伸到奇点去，刚好继续看奇点临近【。