In a manner lacking logical reasoning or based on emotion rather than facts.
From 'irrational' (from Latin 'irrationalis,' combining 'ir-' meaning not + 'rationalis' from 'ratio' meaning reason) plus '-ly' (adverb suffix forming manner adverbs).
Behavioral economics proves we're all irrational in predictable ways—we fear losses more than gains feel good, which is why understanding our 'irrational' patterns actually makes us more rational.
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