It looks like this is your first post. Welcome to Less Wrong!
I suspect there are quite a few jugglers / circus-skills folk in the rationality community, though I'm not sure I'd draw any kind of associative conclusion. After all, an interest in pot, didgeridoos and the narcissistic approval of one's peers can also draw someone to juggling.
Thanks!
For me it's the impulse to become stronger that draws me both to rationality ("martial art of the mind") and circus, (as arbitrary as that may seem).
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