A rhetorical question asked for effect rather than to get an answer, often used to emphasize a point in speech or writing.
From Greek erotemē (ἐρώτημα), derived from erotān 'to ask' or 'to question.' The term entered English through classical rhetoric studies in the 16th century, referring to questioning as a persuasive device.
Ancient Greek orators loved erotemes—they'd ask 'Is this just?' instead of saying 'This is unjust,' knowing the audience would answer the question in their minds. It's psychology before psychology existed, and you'll hear it constantly in modern speeches and advertisements.
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