Assuming the 120 seconds is accurate, I wonder what factors make that the sweet spot? Short enough to average over alts, but long enough to have some convincing short-range correlation in the convos?<p>(francophones may be interested in the following story from the minitel days, before queue-based averaging of the « animatrices » : <a href="https://archive.wikiwix.com/cache/index2.php?url=http%3A%2F%2Fowni.fr%2F2012%2F06%2F28%2Fjai-ete-animatrice-de-minitel-rose%2F#federation=archive.wikiwix.com&tab=url" rel="nofollow">https://archive.wikiwix.com/cache/index2.php?url=http%3A%2F%...</a> )