Ah, briefings.....
Given by those who assume they know it all, (normally sitting there with notes in hand), to us, the crew.
It does NOT take a genius to be aquainted with what is required, (oven/overhead fires, safety equipment, medical emergencies, etc, etc).
I know where Xtc is coming from, it isn't hard. Most briefings in my company consist of: "name some points of cabin secure" - "explain how to use <a certain> piece of equipment" Everybody drones their answer, as the No1 reads from his/her list of questions and answers.
God - on the occasion you get a GOOD No1, who will ask something different, (and - good gracious), actually knows what's in the manual themselves, the crew are shocked into thinking.
Personally, I think ALL these people who give briefings should be 'put on the spot' themselves sometime - sort the men from the boys, and the girls from the women.
Don't shoot me for MY opinion!