[cookieperson]

Also you are allowed to call that out AT THE CONFERENCE. In my field conference talks always have a Q and A. Sometimes people get completely shredded (in a tactful professional way) during a Q and A. If it's something you disagree with ask questions. This is someone willing to put their reputation on the line to say something, they've been vetted, voted on, made arrangements, etc. If they are wrong well that's what peer review is for, and working as a team is for.