Is it an affectation that they’re trained to deploy? (If so, why?) Or is it just a natural thing that happens in the very specific circumstance of being a politician on the campaign trail, and that’s why no one else seems to do it?
I don’t think I’ve seen it in any other context 🤔
Cheers!


It’s one of many gestures that are used by trained public speakers as non-verbal communication cues. Here are some examples, including the one you asked about: https://qz.com/work/1093701/a-guide-to-ted-talk-hands-seven-signature-moves
There are many more beyond those. Using hand gestures in public speaking has been around since at least classical times.
Thanks for posting that quote from the article.