Biden's record as VP and standing on world stage give the lie to "gaffe-machine" myth. Though

[emmaverybo]

concern trolls depict Biden’s occasional gaffes as a sign that he is skating on the express slope to dementia, Biden—prone to slips-of-the-tongue throughout his successful political career—managed to become one of “the most influential VP’s in history,” and still, commands a respect on the world stage unparalleled by his rivals.

Biden, the Most Influential Vice-President in History?

https://www.theatlantic.com/politics/archive/2012/12/joe-biden-the-most-influential-vice-president-in-history/266729/

Note: Since this article’s publication, Biden’s second term served to remove much question.
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World Leaders Tell Biden the World Needs You

https://www.politico.com/story/2019/03/20/biden-2020-foreign-policy-national-security-1228345

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Biden remains the only candidate to lay out, with requisite substance and authority, a foreign policy vision, was widely praised for his Iowa address after El Paso, his interview with Anderson, and from day one, has framed the fight for the presidency in the most profound terms—no less than a “struggle for the soul of America.”

Surely, his recent Op-Ed tracing the failed policies in Central America which have contributed to the humanitarian crisis at our borders should leave no doubt that Biden is more than sharp; in fact, he has unmatched experience, knowledge, and passion, amounting to wisdom, to bring to bear on the most crucial issues of our present and our future.

Meanwhile he campaigns with stamina, vigor, and authenticity, making an emotional connection to audiences which means more to them, I’d bet, than a flubbed date or mix up in remembered details. With Joe, the essence of his style is in being both a seasoned, masterful politician and a real human being.