There seems to be an ethical problem here. There are "rules and regulations" regarding cary on baggage. The reason may not be apparent most of the time and the rule may seem foolish. "If the bag fits in the bin, cram it in." The rule may be motivated by weight during an emergency that could cause the bin to fail. I have problems with those who make rules and don't enforce them, ad people who knowingly and willfully break the rules for their own convience. I don't think photographers are exempt from ethics. We certainly expect others to be "ethical" about throwing trash away and walking where my camera is aimed. I'm disappointed that Michael seems to be endorsing braking the rules, at least in an offhand way.