However, there are a lot of nerds. Of all shapes, sizes, and persuasions. There were entire legions of guys dressed up as Stormtroopers, tons of anime sailor girls, cat girls, Jedi knights, Firefly folks (I myself was done up in Kaylee swag), Final Fantasy characters, there were artists, vendors, books, comics, games, movies, if it exists in fandom, it is represented at San Diego Comic Con.
I think there were probably 100,000 people there. There were more people in one convention center than live in my hometown. Times three.
It is impossible to knit at Comic Con without jabbing some poor nerd with a dpn, so you might as well not bother.
Eye opener, and that's no lie.