Why is relying on the rhyme 'Red touches yellow, kill a fellow' cautioned against by experts?

Answer

Aberrant color patterns are regularly encountered where the rule breaks down

Experts advise against strict reliance because the coral snake can exhibit aberrant color variations, causing the pattern rule to fail, especially within its native territory.

Why is relying on the rhyme 'Red touches yellow, kill a fellow' cautioned against by experts?
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