A Scots friend who has clocked many miles on many different airlines has an interesting theory on Air Canada, which he rates the bottom for service and attitude.

He points out that Air Canada uses a political symbol - Canadian maple leaf flag - in its brand identity. As a result, Air Canada becomes a symbol for the national identity of Canada. Ergo, Canadians get smeared whenever time an Air Canada flight attendant is rude or abusive. Canadians also end up wearing bad vibes that are produced when passengers are asked to pay full-fares for no-frills service, like charging for blankets and soggy sandwiches.

He reckons Canadians should sue Air Canada for malicious defamation of the Canadian character. Class action suit, anyone?