On Children



On Children
Kahlil Gibran

Your children are not your children.
They are the sons and daughters of Life’s longing for itself.

They come through you but not from you,
And though they are with you, yet they belong not to you.

You may give them your love but not your thoughts.
For they have their own thoughts.

You may house their bodies but not their souls,
For their souls dwell in the house of tomorrow, which you cannot visit, not even in your dreams.

You may strive to be like them, but seek not to make them like you.
For life goes not backward nor tarries with yesterday.

You are the bows from which your children as living arrows are sent forth.
The archer sees the mark upon the path of the infinite,
and He bends you with His might that His arrows may go swift and far.

Let your bending in the archer’s hand be for gladness;
For even as he loves the arrow that flies, so He loves also the bow that is stable.


关于子女(致我们终将远离的子女)
纪伯伦

你的儿女,其实不是你的儿女。
他们是生命对于自身渴望而诞生的孩子。

他们借助你来到这个世界,却非因你而来,
他们在你身旁,却并不属于你。

你可以给予他们的是你的爱,却不是你的想法,
因为他们有自己的思想。

你可以庇护的是他们的身体,却不是他们的灵魂,
因为他们的灵魂属于明天,属于你做梦也无法达到的明天。

你可以拼尽全力,变得像他们一样,却不要让他们变得和你一样,
因为生命不会后退,也不在过去停留。

你是弓,儿女是从你那里射出的箭。
弓箭手望着未来之路上的箭靶,
他用尽力气将你拉开,使他的箭射得又快又远。

怀着快乐的心情,在弓箭手的手中弯曲吧,
因为他爱一路飞翔的箭,也爱无比稳定的弓。

Do It Anyway

这首诗歌,有两个版本,一个是Mother Teresa修改引用后的版本,一个是Dr. Kent M. Keith的原创版本。而我在网络上查下来,不同网站上的版本,也有一定的差距。


Do It Anyway
by Mother Teresa

People are often unreasonable, irrational, and self-centered.
Forgive them anyway.

If you are kind, people may accuse you of selfish, ulterior motives.
Be kind anyway.

If you are successful, you will win some unfaithful friends and some genuine enemies.
Succeed anyway.

If you are honest and sincere people may deceive you.
Be honest and sincere anyway.

What you spend years creating, others could destroy overnight.
Create anyway.

If you find serenity and happiness, some may be jealous.
Be happy anyway.

The good you do today, will often be forgotten.
Do good anyway.

Give the best you have, and it will never be enough.
Give your best anyway.

In the final analysis, it is between you and God.
It was never between you and them anyway.


The Paradoxical Commandments
by Dr. Kent M. Keith

People are illogical, unreasonable, and self-centered.
Love them anyway.

If you do good, people will accuse you of selfish ulterior motives.
Do good anyway.

If you are successful, you win false friends and true enemies.
Succeed anyway.

The good you do today will be forgotten tomorrow.
Do good anyway.

Honesty and frankness make you vulnerable.
Be honest and frank anyway.

The biggest men and women with the biggest ideas can be shot down by the smallest men and women with the smallest minds.
Think big anyway.

People favor underdogs but follow only top dogs.
Fight for a few underdogs anyway.

What you spend years building may be destroyed overnight.
Build anyway.

People really need help but may attack you if you do help them.
Help people anyway.

Give the world the best you have and you’ll get kicked in the teeth.
Give the world the best you have anyway.

核弹能炸毁小行星吗?

在科幻电影中,经常可以看到用核弹去炸小行星,这种方式应该是错误的。

核弹杀伤力很大,其杀伤力来源于
1、爆炸的高温高压
2、冲击波
3、核辐射

而到了宇宙中,没有空气,冲击波无法形成,核辐射对与小行星没任何伤害。
而爆炸瞬间的高温高压,对小行星的伤害也是微乎其微的。

所以,直接用核弹轰击小行星,基本是不可行的。

比较可行的是:
1、利用核弹,让小行星偏离地球轨道,离地球越远越好,这就要人类早些发现问题
2、设法将核弹进入小行星内部,辅助以大量液态、固态气体,然后引爆,将小行星炸碎

“双生子佯谬”谬在哪里?

双生子佯谬之所以会产生,是因为一个很简单的原因:从地球到外星球然后回来需要多次加速和减速,这个变化的速度是狭义相对论不适用的。

也就是说该佯谬的提出者,直接忽略了哥哥的四次加减速过程,而只是说哥哥和弟弟看来对方都是相对运动的,用狭义相对论得出了错误的结论。

其实用狭义相对论也可以得到正确的结论,但要规避加减速,需要A,B,C三个人:
A,B同20岁,B从地球出发去外星球。到达外星球时,A过了5年为25岁,B过了1年为21岁。
然后此时,一个21岁的C,从外星球同样速度返回地球。
到达地球时,C过了1年为22岁,A过了五年为30岁。

但真正解时,需要广义相对论,由于速度是渐变的,其实在B最大速度飞行的两个阶段,A和B观测对方,都可以得到自己为5天,对方为1天的结论,看起来的确是矛盾的。
但再加上加速阶段,结论就会被修改为正确的,B看到A的时间流逝会更久,两人相遇时B是要更年轻。
如果加速度是无穷大(这是不可能的),B在减速并加速返回时,会看到A瞬间变老。
当然,这些是可以用公式推导的,要用洛伦兹变换。
如果加减速为无穷大(这是不可能的),A和B的年龄差距还是来源于B的飞行速度,越接近于光速,年龄差越大。

其实另外一个推论是,当接近光速的是时候,B的时间比A变慢,当接近光速的时候,B的时间会趋于静止。
也就是说,如果B用光速飞行,从A的角度来看,B在不会变老的情况下,可以飞行无限久,也就是说B可以在不变老的情况下,达到宇宙的每一个角落,这其实就是时间膨胀的另一种视角。

:)

PS:
相对论中,光速c是一个常量,被称为宇宙极限速度。但实际上,相对论是允许有超光速存在的。但相对论不允许有超过光速的质量、信息、能量的传递。比如:
1、当前观测到的宇宙膨胀速度是超光速的,因为相对论不适用于空间膨胀问题
2、量子纠缠是超光速的,但无法传递信息
3、电磁波的相位速度是可以超光速的,但无法传递信息

孙悟空为什么可以大闹天宫却打不过路上的小怪?

孙悟空可以大闹天宫,打得玉皇大帝满地爬,为什么在取经路上,打不过小怪呢?
是他能力变差了吗?自然不是咯。那为什么呢?有以下几条:

1、要考虑后台,怕打错
要打怪,先要摸清楚他有没有后台,有的话,后台是谁。
在保唐僧以前,孙悟空是从石头缝中蹦出来的,没爹没妈,是个苦孩子,草根一个。学了本领后,不需要有任何顾忌,想打谁就打谁,而且可以往死里打,被人追到家门口都不怕的。
在保唐僧以后,就要有各种顾忌,弄不好以后还要与这些后台做同事,甚至上下级。打狗还要看主人呢,所以不敢贸然下手,就算下手也不敢下死手。

2、要遵守游戏规则,怕法宝
孙悟空经常被各种法宝打的无地自容。当年大闹天宫的时候,那些神仙怎么没有用这些法宝呢?
其实,道理很简单,绝大多数法宝,只有你开始遵守某些规则的时候才会有效。比如芭蕉扇,规定你只能带着唐僧走过火焰山,才能算成功。要是以前,一个筋斗云直接飞过去咯,哪里有这些麻烦。
这些法宝在现实里是什么,请自己对号入座咯。

3、拼命程度不同,怪与天兵天将的区别
天兵天将是给玉帝打工的,打工为了养家糊口,一般是不愿意玩命的。
怪是自己开荒的,说白了是自己创业,为了自己的事业敢玩命啊。一夫舍死,万夫不当。说的就是这种情况。
怪死命打,孙悟空又放水,能打赢才怪。

4、有顾忌,唐僧的原因。
以前随意惯了,现在有人管,关键领导除了意志坚定外,没任何能力。
孙悟空又不善于与比自己差很多的领导沟通,问题就来了啊。
-》孙悟空告诉唐僧这是怪,唐僧不信,弄不好还来几遍紧箍咒
-》唐僧被抓,只会哭哭啼啼
-》孙悟空找人帮忙,救回唐僧
-》继续上路,从来不总结
唐僧是个有明确目标的人,意志坚定,可以团结队伍。但同时,他无法与下属沟通,无法让下属尽情发挥,不算是一个好领导,只适合做二把手或三把手。
开始的时候,孙悟空越权做决定就被唐僧收拾。后来慢慢成了,不越权等唐僧被收拾,然后他再去救唐僧咯。

所以说,不是孙悟空能力变差,而是从TZ外,到TZ内,极大限制了他个人的能力。而且高层对他还不放心,还要套个箍,然后逼着孙悟空带唐僧打怪升级,过了试用期才能转正,转正还要花钱买。哈哈~~,这就是《西游记》啦。

现实中呢,没有TZ,很难维护统治,有了TZ,就要寄希望于遇到个好领导咯。这就是为什么明君会带来繁荣,而昏君会让国家衰败与灭亡的原因啦。

关于“性格恶劣的人平均工资更高”的谬论

前一阵子,有人对我说,国外某机构研究表明,“性格恶劣的人平均工资更高”,而“性格好的人评价工资低”,所以要“性格恶劣一些”。

这个我就表示有压力了,稍微分析一下,就会发现其中问题所在。

根据这个命题,可以很简单的,将人划分为四类:
性格好,能力强
性格好,能力差
性格差,能力强
性格差,能力差

不管你是老板,还是HR,首先要留住的就是“性格好,能力强”,这类人只要愿意,一般都可以做比较久。
首先要赶走的就是“性格差,能力差”的人,所以这类人在一家公司很难做很久的。
然后就是,“性格好,能力差”和“性格差,能力强”的人,根据公司的文化、个人能力的实际强弱以及态度,这两种人在一家公司都有做比较久的可能。

所以现在再去看一下,一个人性格恶劣,但公司不愿意让他走,为什么?
因为公司离不开他, 或者说他/她已经强大到 ,可以让别人忽略他/她性格的问题。
能力高的人,拿高工资有问题吗?

再看一下,性格好的人,留在一家公司,能力有高的也有低的,“性格好的人”平均工资自然会低于“性格好,能力强”的员工的平均工资咯。也就很可能低于“性格差,能力强”的员工的工资咯。

所以说,想涨工资,那就要先把事情做好。没能力,又性格恶劣,让所有人讨厌,只有死路一条。

The Lord of the Rings

Aragorn:
Son of Gondor,of Rohan,my brothers!
I see in your eyes the same fear that would take the heart of me.
A day may come when the courage of men fails when we forsake our friends and break all bonds of fellowship. But it is not this day.
An hour of wolves and shattered shields when the age of men comes crashing down.But it is not this day.
This day we fight!
By all that you hold hear on this good earth I bid you stand, Men of the west!

Théoden:
Forth, and fear no darkness!
Arise, Arise, Riders of Théoden! Spears shall be shaken, shields shall be splintered, a sword-day, a red day, ere the sun rises!
Ride now! Ride now! Ride! Ride for ruin, and the world’s ending!
Death!
Death!
Death!
Forth Eorlingas!

Pirates of the Caribbean

Elizabeth Swann:
You all listen to me! LISTEN!
The other ships will still be looking to us, the Black Pearl to lead, and what will they see?
Frightened bilgerats aboard a derelict ship?
No, they will see free men and freedom! And the enemy will see the flash of our canons and they will hear the ringing of our swords and they will know what we can do! With the sweat of our brow and the strength of our backs and the courage in our hearts! Gentlemen, Hoist the Colours.

Brave Heart

William Wallace’s father:
Your heart is free. Have the courage to follow it.

William Wallace:
I am William Wallace. And I see a whole army of my countrymen here in defiance of tyranny. You have come to fight as free men, and free men you are. What would you do without freedom? Will you fight?

William Wallace:
Aye, fight and you may die. Run and you’ll live — at least a while. And dying in your beds many years from now, would you be willing to trade all the days from this day to that for one chance, just one chance to come back here and tell our enemies that they may take our lives, but they’ll never take our freedom.

William Wallace:
Many man dies,not every man really lives.

The Pursuit of Happyness

Chris Gardner:
Don’t ever let somebody tell you you can’t do something, not even me. You got a dream, you gotta protect it. People can’t do something themselves, they wanna tell you you can’t do it. If you want something, go get it. Period.

Chris Gardner:
There is an I in happiness, there is no Y in happiness, It’s an I.