I was a Mathcamper this year. One of the most common things people said to me when I mentioned that I was a first-timer was that 2015 was the last year Conway a

I was a Mathcamper this year. One of the most common things people said to me when I mentioned that I was a first-timer was that 2015 was the last year Conway attended, and how sad it was that I'd miss his lectures and general presence around camp. :( There's this wonderful thing (invented by Conway) they do where, in a noisy crowded assembly, one person raises their hand and stops making any sound. Anyone who notices them raises their hand and stops talking. It works extremeley well (and really quickly!), and I suspect it was Conway's general frailty that led him to come up with this.