I tried to pick people based mainly on their practical accomplishments across human experience
(entertainment, humanity, politics, journalism)
and dividing them evenly by sex.
They're admittedly all american but seem worldly. I don't blindly agree with their views but seem well informed.
Stephen Colbert for his charisma, his facetious comedy sets a high bar, he's erudite, has knowledge of the media & entertainment industry at the highest levels.
The fanaticism with Lord of the Rings is a hilarious quirk.
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To study and understand emotion from a scientific perspective and then communicate it to the public is an invaluable contribution to humanity. She has one child and being a mother is an exclusively valuable trait.
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She's the most impressive person on the list and the last person I thought of to invite. She's also the most controversial in terms of the immense influence she's had on world affairs. Bonus points for being a musician, fluent in Russian and a proponent of athletics.
Lastly,
Andrew Callaghan. In contrast to the previous three who are 20 years or more older than I am, he represents those who are roughly 20 years younger.
He tries to provide a balanced perspective on the world's fringes and would give the other three guests someone to compare their shared generational experience against.
PS, If y'all gonna post ... tell us
WHY. Nobody cares about a list of four people. You too, Sneaky.