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以事实反驳记者们炒作霍金时光机理论

最近炒作霍金先生的言论的帖子。比较典型的如“霍金称时光机理论上可行 警告勿回去看历史”

问题是,霍老爷子究竟说啥了?这些媒体没有给出任何原文,只是自顾自扯淡。ok,秉着信某某得永生而信女支者死全家的理念,自行搜索。找到疑似霍老爷子的发言原文。

http://www.dailymail.co.uk/home/moslive/article-1269288/STEPHEN-HAWKING-How-build-time-machine.html

全文并不艰涩,就不用翻成中文了,实在不行的话可以网页翻成中文借鉴着看

以下是我的读后感,不保证靠谱,但是至少得比女支者靠谱
简单的说,霍金的观点如下

虫洞无处不在,但实际上太小了。
The truth is that wormholes are all around us, only they're too small to see.
Wormholes are very tiny. They occur in nooks and crannies in space and time.
You might find it a tough concept, but stay with me.

这么小的虫洞不足以维持人类的时空穿越
Way too small for a human to pass through - but here's where the notion of
wormhole time machines is leading.

如今学界有收集、放大虫洞以维持人类、设备时空穿越的设想
Some scientists think it may be possible to capture a wormhole and enlarge it
many trillions of times to make it big enough for a human or even a spaceship
to enter.

霍金特地重申:爷就谈个设想而已,爷tmd没说能搞出来
I'm not saying it can be done, but if it could be, it would be a truly
remarkable device.

然后下面基于这个未必能实现的设想,霍金进行了一个虚拟实验:如果以后真能实现,爷假假也算当代最nb的科学家之一了,这段言论流芳百世估计问题不是很大,那我邀请一下,来个妞穿越到现在的我面前看一眼?啊,怎么没有呢。

So I've combined two of my favourite things to see if time travel from the
future to the past is possible.

Let's imagine I'm throwing a party, a welcome reception for future time
travellers. But there's a twist. I'm not letting anyone know about it until
after the party has happened. I've drawn up an invitation giving the exact
coordinates in time and space. I am hoping copies of it, in one form or
another, will be around for many thousands of years. Maybe one day someone
living in the future will find the information on the invitation and use a
wormhole time machine to come back to my party, proving that time travel will,
one day, be possible.

In the meantime, my time traveller guests should be arriving any moment now.
Five, four, three, two, one. But as I say this, no one has arrived. What a
shame. I was hoping at least a future Miss Universe was going to step through
the door. So why didn't the experiment work? One of the reasons might be
because of a well-known problem with time travel to the past, the problem of
what we call paradoxes.

爷再来旧瓶装新酒,用自己的方式谈谈祖父悖论
Paradoxes are fun to think about. The most famous one is usually called the
Grandfather paradox. I have a new, simpler version I call the Mad Scientist
paradox.

I don't like the way scientists in movies are often described as mad, but in
this case, it's true. This chap is determined to create a paradox, even if it
costs him his life. Imagine, somehow, he's built a wormhole, a time tunnel
that stretches just one minute into the past.

Through the wormhole, the scientist can see himself as he was one minute ago.
But what if our scientist uses the wormhole to shoot his earlier self? He's
now dead. So who fired the shot? It's a paradox. It just doesn't make sense.
It's the sort of situation that gives cosmologists nightmares.

This kind of time machine would violate a fundamental rule that governs the
entire universe - that causes happen before effects, and never the other way
around. I believe things can't make themselves impossible. If they could then
there'd be nothing to stop the whole universe from descending into chaos. So I
think something will always happen that prevents the paradox. Somehow there
must be a reason why our scientist will never find himself in a situation
where he could shoot himself. And in this case, I'm sorry to say, the wormhole
itself is the problem.

最后,爷认为这种设想很不靠谱。
In the end, I think a wormhole like this one can't exist.

之后的内容是在讨论高速下的时间变慢现象,但凡学过相对论的都学到过,跟什么穿越时空半毛钱关系都没有。略

看了原文载回过头来看妓者们扯淡。

他声称带着人类飞入未来的时光机,在理论上是可行的,所需条件包括太空中的虫洞或速度接近光速的宇宙飞船。 学过相对论的有不知道双生子佯谬的么?“飞到未来”,是第一坨shit。
所需条件,搞笑了,人家谈一个设想(既声明了这个设想本身不一定靠谱又声明了自己认为这个设想不可能)被转进成所需条件,又是一坨shit

不过,霍金也警告,不要搭时光机回去看历史,因为“只有疯狂的科学家,才会想要回到过去"颠倒因果"。” 这句话完全是扯淡了。原文里是霍金用自己的方法,以一个疯狂科学家的例子来介绍著名的祖父悖论。

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