No Max, never been a schoolteacher anal retentive or otherwise. I have been an aircraft captain for many years though. This is a professional pilots forum and indeed your question though polite was presumably intended for that audience. You applaude the replies of those whose answers were incorrect though sympathetic to your own question. If you dont want to know the answer dont ask the question.
My reply was the answer of an airline captain. if you want comments from fellow passengers try the SLF forum. As I said if you want a definitive reply phone the C.A.A. As for getting a life I work a demanding schedule and am married with half a dozen kids and all the trials and tribulations that go with that joy. I dont really have the time to take on any more commitments but thank you for your inciteful and no doubt well intentioned advice.