butterfly effect

a situation where a seemingly minor action or change has a large and significant effect, often in different places or globally, highlighting how small variations in initial conditions can lead to drastically different outcomes.

蝴蝶效應（微小的变化可能導致巨大的影響）

• The small software update seemed insignificant, but it caused a system-wide crash, a classic case of the butterfly effect.

這個小軟件更新看起來微不足道，但卻導致了整個系統崩潰，這是一個典型的蝴蝶效應案例。