Re: fairness

[Fred Foldvary]

>   If the audience is randomly distributed, then even a 
> sequential selection of questioners gives everyone an equal chance of 
> being chosen.
> John

True, but in fact, typical audiences are not randomly distributed, as the
early comers may sit closer to the front or at the edges of the rows.  A
sequential selection is then not random because the questions themselves
have a sequence and the early questions can set the agenda for the latter
questions.

Fred Foldvary