"rocket surgeon" meaning in English

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  "etymology_text": "Blend of rocket scientist + brain surgeon, as both are commonly used in such phrases as \"you don't have to be a rocket scientist to understand it\".",
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  "lang_code": "en",
  "pos": "noun",
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          "ref": "2012, Chris Vander Mey, “How to measure greatness”, in Shipping Greatness, O'Reilly Media, →ISBN, page 89:",
          "text": "At this point you may be thinking, “I know all about goals. I know to make them S.M.A.R.T.” What's S.M.A.R.T? Some rocket surgeon a while back came up with the notion that goals should be specific, measurable, attainable, reasonable, and time-based.",
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      "glosses": [
        "Synonym of rocket scientist (“someone qualified to understand or handle that which is overly complex, detailed or confusing”)"
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      "id": "en-rocket_surgeon-en-noun-ooVey-r4",
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        "(humorous) Synonym of rocket scientist (“someone qualified to understand or handle that which is overly complex, detailed or confusing”)"
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          "word": "rocket surgery"
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          "word": "rocket scientist"
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  "word": "rocket surgeon"
}

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  ],
  "etymology_text": "Blend of rocket scientist + brain surgeon, as both are commonly used in such phrases as \"you don't have to be a rocket scientist to understand it\".",
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        "(humorous) Synonym of rocket scientist (“someone qualified to understand or handle that which is overly complex, detailed or confusing”)"
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  "word": "rocket surgeon"
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