It happens around the edges
At any gathering of people, from a high school assembly to the General Assembly at the UN, from a conference to a rehearsal at the orchestra, the really interesting conversations and actions almost always happen around the edges.
If you could eavesdrop on the homecoming queen or the sitting prime minister, you'd hear very little of value. These folks think they have too much to lose to do something that feels risky, and everything that's interesting is risky.
Change almost always starts at the edges and moves toward the center.