That struck me as well. The organizers were 5 guys and 1 woman, so if you look at the photos it looks like the room is majority male. However, of the attendees,

That struck me as well. The organizers were 5 guys and 1 woman, so if you look at the photos it looks like the room is majority male. However, of the attendees, there were 9 men and 9 women. I was curious about that. We were all, in a sense, handpicked to be at this event -- after we signed up they sent us an email every day saying "Are you sure you still want to be in, please reply by 10 PM or you are kicked out." (I'm paraphrasing, they were slightly more diplomatic.) We failed to reply on Sunday night so we got kicked out. Then on Monday they told us there was an opening (someone else failed to reply and got kicked out). So we got back in. But the point is, everyone who was there was, in a sense, picked. So I'm curious if the organizers deliberately engineered the 50/50 gender split. The whole thing was videotaped, and we had to sign a release form for the video as soon as we walked in.