A change that happens because of a particular action, event, or cause.
From Latin 'effectus' meaning 'accomplishment, result', from 'efficere' meaning 'to work out, to bring about'. It entered English through French, keeping the idea of something that has been brought into reality.
Effect is the result; cause is the reason—mixing them up is one of the most common thinking errors. In law, science, and everyday life, understanding effects means tracing the hidden chains of cause behind them.
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