Question Etiquette #457
State your name [not titles] and affiliation - it helps the speaker try to pitch her/his answer.
Thank the speaker - without flourish - for the talk.
Ask one tightly framed question - one - of minimal duration and wherever possible phrase it such that the speaker is able to extend an undeveloped point or elaborate on an intriguing element of her/his talk.
Sit down, maintain eye contact, and say thank you again when the speaker has finished.