Number of attendees: ~17,000

(Population of the town that I grew up in: ~20,000)

Pages in the program book: 590

Number of sessions I attended today in which a cell phone rang during a presentation: 5

Number of sessions I attended today in which a cell phone rang, and the owner answered it and started talking during a presentation: 2

Number of sessions I attended today in which someone in the audience pulled out his cell phone, dialed, and started talking during a presentation: 1

Number of photos or recordings attendees are allowed to take of a presentation without explicit permission: 0

Number of people discreetly recording videos of Jeremy Rich’s (Duke University) talk this afternoon, after he had explicitly asked the audience not to: at least 2