Saturday, November 18, 2006

Butterfly Effect-蝴蝶效应


我自创的formula

Wilkepedia 很清楚的解释,


The butterfly effect is a phrase that encapsulates the more technical notion of
sensitive dependence on initial conditions in chaos theory. Small
variations of the initial condition of a dynamical system may
produce large variations in the long term behavior of the system. This is
sometimes presented as esoteric behavior, but can be exhibited by very
simple
systems: for example, a ball placed at the crest of a hill might roll
into any
of several valleys depending on slight differences in initial
position.
The
phrase refers to the idea that a butterfly's wings might create
tiny changes in the atmosphere that ultimately cause a tornado to
appear (or, for that matter, prevent a tornado from appearing). The flapping
wing represents a small change in the initial condition of the system, which
causes a chain of events leading to large-scale phenomena. Had the butterfly
not
flapped its wings, the trajectory of the system might have been vastly
different.

中文的解释为,


蝴蝶效应(Butterfly Effect)是指在一个动力系统中,初始条件下微小的变化能带动整个系统的长期的巨大的连锁反应。这是一种混沌现象。
美国气象学家爱德华·罗伦兹(Edward
Lorenz)1963年在一篇提交纽约科学院的论文中分析了这个效应。“一个气象学家提及,如果这个理论被证明正确,一个海鸥扇动翅膀足以永远改变天气变化。”在以后的演讲和论文中他用了更加有诗意的蝴蝶。对于这个效应最常见的阐述是“一个蝴蝶在巴西轻拍翅膀,可以导致一个月后德克萨斯州的一场龙卷风。”
蝴蝶效应通常用于天气,股票市场等在一定时段难于预测的比较复杂的系统中。
此效应说明,事物发展的结果,对初始条件具有极为敏感的依赖性,初始条件的极小偏差,将会引起结果的极大差异。
“蝴蝶效应”在社会学界用来说明:一个坏的微小的机制,如果不加以及时地引导、调节,会给社会带来非常大的危害,戏称为“龙卷风”或“风暴”;一个好的微小的机制,只要正确指引,经过一段时间的努力,将会产生轰动效应,或称为“革命”。

如果两个人的关系等于 A+B, 然后第三个人 C 加入, 结果并不等于 A+B+C, 而是等于 X (未知数). 原理很简单, 人际关系并不象数学, 加减乘除是不适用的. 写了那麽多, 也只不过是想说原来把一个人带入你的生活有时侯会给原本的生活带来很多改变. 当然不是完全不好, 不过不好的好象多过好的. 又发现我原来真的很笨. 笨蛋笨蛋.

2 comments:

D.A.Coleone said...

怎么上面那张图似乎看不见,点连接了才能看见。(A+B)+C!=A+B+C

sarah said...

I am not sure why the picture doesn't showed up. Need some help..