This is kind of a rerun of an event which took place in 2007 with the so called Four Horsemen, were in the Christopher Hitchens‘s apartment they set down together and discussed.

At that time Ayaan Hirsi Ali was supposed to be the fifth. And right up to the last minute she was going to be of that company, but because of a sudden emergency she had to cancel. So they ended up as Four Horseman rather than Four Plus one Horsewomen. Now in 2012, the discussion continues without the late Christopher Hitchens but includes Ayaan Hirsi Ali.
Four personalities in discussion, on stage, in front of an audience of 4000. It actually comes out very well. With no chairperson or moderator, everyone seems to get a fair go. No one dominates. And the discussion is fascinating. It’s the panel discussion between Richard Dawkins, Daniel Dennett, Sam Harris and Ayaan Hirsi Ali which occurred at the 2012 Global Atheist Convention