Originally Posted by gibon2
2. Anticipating, identifying and quickly responding to the problems that cause bottlenecks. This is where the SQ crew really shone - they'd instantly and magically appear at the side of anyone blocking the aisle, and sort out whatever the problem was. Sometimes it's just a matter of tactfully asking the pax to stand in front of the seat while he sorts out his reading matter, or fiddles with his mobile phone. This is obviously easier to do in a twin-aisle, as you have more chance of reaching the problem area quickly.
From experience that seems to be the biggest problem. A complete lack of spatial awareness, and total disregard for everyone else. I'm not sure that CC can address that easily without the use of a megaphone in a single aisle aircraft!
SLF cannot be trusted to self-load