Among the first people to join the staff of Slate, way back in 1996, were Associate Publisher Betsy Davis and Program Manager Bill Barnes.
Bill Barnes didn't join Slate's staff until 2011.
mnli hypothesis: Bill Barnes didn't join Slate's staff until 2011. premise: Among the first people to join the staff of Slate, way back in 1996, were Associate Publisher Betsy Davis and Program Manager Bill Barnes.