what is butterfly effect?
蝴蝶效应是气象学家洛伦兹1963年提出的，在社会生活各个领域广为验证，其大意为：一只南美洲亚马孙河流域热带雨林中的蝴蝶，偶尔扇动几下翅膀，可能在两周后引起美国得克萨斯的一场龙卷风。其原因在于：蝴蝶翅膀的运动，导致其身边的空气系统发生变化，并引起微弱气流的产生，而微弱气流的产生又会引起它四周空气或其他系统产生相应的变化，由此引起连锁反应，最终导致其他系统的极大变化。
蝴蝶效应也被称为“蹄铁效应”：如果丢掉一只铁钉就会丢掉一个蹄铁，丢掉一个蹄铁可能失去一个马蹄，丢掉一个马蹄可能失掉一匹战马，丢掉一匹战马可能会丢掉一个将军，丢掉一个将军可能就失去一场战争，由于这场战争非常关键，丢掉一场战争就失掉一个国家。一个小铁钉的问题，由于处理不当，可能会导致国家的灭亡。
蝴蝶效应说明，一个极小事件的发生，由于不断引发连锁反应，可能会导致严重的后果或者重大事件的发生。
In a system when a small change results in an unpredictable and disproportionate disturbance, the effect causing this is called a butterfly effect.
butterfly effect also means Chaos Theory, theory describing the complex and unpredictable motion or dynamics of systems that are sensitive to their initial conditions. Chaotic systems are mathematically deterministic—that is, they follow precise laws, but their irregular behavior can appear to be random to the casual observer. Chaotic behavior is common in systems as varied as electric circuits, measles outbreaks, lasers, clashing gears, heart rhythms, electrical brain activity, circadian rhythms, fluids, animal populations, and chemical reactions. It is suspected that even economic systems, such as the stock exchange, may be chaotic. The field of chaos is evolving rapidly from a theoretical to an applied science.
