Stephen Byerley Timeline and Summary

2032, "Evidence": Francis Quinn sucks Lanning and Calvin into an investigation of whether Stephen Byerley is a robot when he runs for mayor (Evidence.7); Byerley proves he's human by hitting a guy—although maybe he's a robot and just hit another robot?
2044, all of Earth joins into one federation (Evidence 305)
2044-52, Byerley serves as World Co-Ordinator for the Earth for two terms (Evidence.305, 307)
2052, "The Evitable Conflict": Byerley asks Calvin for help in figuring out if the Machines are rebelling or if people are sabotaging the Machines; the answer is that the Machines are helping to lead our destiny
2057, Stephen Byerley "dies" and is atomized so there's no evidence that he was a robot (Evidence.5, 303)