the.com/opinion

the cheapest thing to have and the most expensive to change.

means a belief or judgment held without complete proof — what you think is true or good, as opposed to what is demonstrably so.

from From Latin opinio, 'a belief or conjecture,' built on the verb opinari, 'to think, suppose, imagine.' It reached English through Old French opinion in the medieval centuries. The root carries a quiet honesty often forgotten: it never meant fact, only what one supposes — a guess dressed in confidence.

backfire effect
Contradicting evidence often strengthens a false belief instead.
roman origin
From opinari, meaning to suppose or conjecture.
crowd echo
People adopt views to match groups before facts.
changing minds
Asking someone to explain often softens their certainty.
for instance

citizens united v fec — 2010 supreme court decision that opinion corporations have first amendment rights

the new york times — newspaper with 2.4m digital subscribers to opinion and analysis

joe rogan experience — podcast reaching 11m listeners per episode with host opinions

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