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butterfly effect

butterfly effect

1 7.9
A small change that causes big, unexpected results far away
  • noun
  • /ˈbʌtərflaɪ ɪˈfɛkt/
  • Specialized
translation icon : efecto mariposa
  • According to the butterfly effect theory, even a minor decision can create significant ripple effects in our lives.
  • call this the butterfly effect

It's like an ongoing happiness butterfly effect.

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Examples

  • Weatherfolks call this the butterfly effect, meaning that because a weather system can be started or impacted by the gentle movement of a butterfly's wings up in Petaluma or Portland or wherever.

    Fiction book (1995)
  • The butterfly effect illustrates how a small action, like a butterfly flapping its wings, can lead to unexpected changes in the weather.

  • Do you know what the butterfly effect is?

  • Look, it's the butterfly effect, okay?

  • In one sense, it is an example of the butterfly effect, except the nature involved is human.

    Blog text (30)
  • I strongly feel God is working through you and you are the start of a butterfly effect for many people.

    Blog text (7)
  • Just to explain, the butterfly effect theories state that even the smallest change can have a chaotic effect on something else.

    Blog text (25)
  • Weather has been known to be chaotic since Edward Lorenz discovered the 'butterfly effect' in the 1960s.

    Blog text (29)
  • It is sometimes referred to as the butterfly effect: that a butterfly stirring the air with its wings in Beijing will affect storm systems over New York in a fortnight's time.

    Academic text (1991)
  • Understanding the butterfly effect helps us realize that tiny events can trigger major consequences in complex systems.

Synonyms

chaos
vsbutterfly effect
  • Specialized
14 6.8

A system that is hard to predict because small changes cause big effects

refers to a single small change causing large unpredictable effects elsewhere
knock-on effect
vsbutterfly effect
  • UK
2 4.7

An indirect result of an event that causes other changes

focuses on small causes producing large and unpredictable distant consequences

How Widespread

butterfly effect
  • Specialized
1 7.9
chain reaction
  • Specialized
1 4.1
to cascade
17 4.7
isolated
59 4.5

Surface Forms

Morphology

butterfly + effect

The constituents 'butterfly' (a small insect) and 'effect' (a consequence) do cue a notion of a small thing producing a consequence, so learners could guess a causal relation from the words. However, the full, technical idea of sensitive dependence on initial conditions — tiny changes producing large, unpredictable outcomes in complex systems — is a metaphorical/scientific extension that typically requires topical or cultural knowledge beyond the literal words, making the expression only partially predictable for a B1 learner.

Etymology

Butterfly effect comes from a simple image used by scientists: a tiny action, like a butterfly flapping its wings, could change the air and, over time, cause a big effect far away. That's why the phrase means 'a small change that leads to large and unpredictable results'.