Originally Posted by Delta Hog

More problematic question to me -- on some aircraft (727? not sure, but I've only seen it on domestics) -- on some aircraft, there will often be a window that is roughly adjacent to a seatback, such that the pax in both 21A and 22A would be able to manipulate the shade. In those cases, who gets decision-making control? I've actually had situations where I put such a shade down, and the passenger in front of me says he wants it up.