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As those who have seen Jurassic Park will know, this means a tiny disturbance in one place, can cause a major change in another. A butterfly flapping its wings can cause rain in Central Park, New York. The trouble is, it is not repeatable. The next time the butterfly flaps its wings, a host of other things will be different, which will also influence the weather. That is why weather forecasts are so unreliable.
Stephen Hawking
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Interpretation

What this quote means

Small changes can have large, unpredictable effects in complex systems.

This quote illustrates the idea that minor events can lead to significant consequences, emphasizing the interconnectedness of systems like weather. Stephen Hawking uses the metaphor of a butterfly flapping its wings to highlight the unpredictability inherent in such systems, where even the slightest variation can result in dramatically different outcomes, thus challenging the reliability of predictions.

Themes

Butterfly EffectChaos TheoryPredictionsChangeInterconnectedness

In practice

Example use cases

In a science class, when discussing chaos theory and its implications on weather patterns.

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