"...people kept trickling in, and I estimate there were about 400 people stuffed in the room by the end. It was standing-room only, and people were spilling out

"...people kept trickling in, and I estimate there were about 400 people stuffed in the room by the end. It was standing-room only, and people were spilling out into the hall. The conclusion? The other talks must have been really boring." Actual conclusion: people eat lunch. His talk was at 12:45, and the previous round of sessions had completed at 12:30.