Slightly off topic, but I wonder about the abilities of some passengers in exit rows. I have been on flights where fellow exit row occupiers have been (a) inebriated to the point of stupor, (b) so weak and confused as to need help standing, and most recently (c) significantly visually impaired (this only became clear when we had to disembark via steps on a remote stand). I realise that there is a tick box on the web site, but this has seemed each time against safe practice. I have never had the courage/inclination to mention it to the crew.