At the end of the day if you seem to know everything thats great feel free to read or look out the window. I don't mind if people dont want to watch/listen.
But try to remember that when the
hit's the fan there are only 4 crew members on the 319 and there are 156 seats, we will not have time to help you or come and hold your hand. We will want to get you out as quickly as possible so we can get out aswell!
Don't get me wrong I'm sure there are thousands of people who could repeat the demo word for word, but come on it takes 5 minutes to do, is it really hard to just refresh yourselves?