Meetings are long slow things of low bandwidth.
The participants writing in whatever they would have said before the meeting happens' The participants, in their own time, edit the agenda, writing in whatever they would have said in the meeting, ie everybody co-writes the minutes of the meeting before the meeting happens. Before the meeting, the future minutes are printed and everybody reads them. The meeting can then simply approve 90 per cent of the future minutes, and briefly argue about any remaining controversial issues. The minutes are far more accurate and complete. Quiet personalities can get their word in.