Also known as optimistic
thumb|right|Is the glass half empty or half full?|Half a glass of water, illustration of two different mental attitudes, optimism (half full) and [[pessimism (half empty)]]
Optimism is the tendency to expect positive outcomes and to see situations in a favorable light, often illustrated by viewing a glass as "half full" rather than "half empty." It matters because how optimistic or pessimistic people are can shape their attitudes, decisions, and overall outlook on life.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).