the.com/liar

Someone optimizing for your reaction instead of your accuracy.

means A person who says things they know to be false, usually to get something or avoid something.

from From Old English 'leogan,' meaning to lie or tell falsehoods, a root shared across the old Germanic languages (German has 'lügen'). The '-ar/-er' ending just means 'one who does this' — same pattern as 'teacher' or 'baker,' except the trade here is deception.

tell
liars add detail, truth-tellers add feeling
cognitive load
lying takes more brainpower than honesty
self-deception
best liars often believe it themselves
kids lie
by age four, basically everyone can
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