A rite of passage that many fellow geometers have gone through: I will be hanging out with the only group of people who can hope to get both Turing awards and Academy awards (take that, C. P. Snow).
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I go to do
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SIGGRAPH gets over 2,000 attendees; considering how we do cartwheels at SODA when we get 300 folks, I expect significant culture shock.
Update: Did I say 2,000 ? I mean 20,000. Sigh....