Which linguistic device was intentionally used in Apple's famous slogan 'Think Different' to make it more memorable and impactful?

Brand slogans are powerful linguistic tools that companies use to create memorable identities in consumers' minds. The most effective slogans leverage linguistic features like rhythm, phonetic patterns, and semantic depth to become part of our cultural lexicon. This trivia challenges you to identify which famous linguistic technique was deliberately employed in creating one of the world's most recognizable brand taglines.

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Grammatical incongruity (using an adjective 'different' where an adverb 'differently' would be grammatically correct)
Phonetic palindrome (the phonemes read the same backward as forward when spoken)
Iambic meter (alternating unstressed and stressed syllables creating a rhythmic pattern)
Cognate pairing (using words that share etymological roots across multiple languages)