This is the question:
I was a bit surprised that it was closed. It was about travelling, it was about a "practical" everyday problem that people face "bumping" and it was a genuine, good faith attempt to "find out" something, not part of a pattern of "random" posts.
I had done my homework and research after a fashion, on the mathematics of "statistical formulas" and "load factors," although I admit to having been very ignorant about things that most travellers knew about air travel. But that's what questions are for!
In upgrading the question, I tried to incorporate the comments of others to produce a more informed question.
The other thing I did was to shift the focus from the "airline" to the "traveller," so that it was clear that I was asking about what travellers should do and not the airline.
So what do I need to do to improve the question further so that it can be reopened? I would give the most weight to answers from people who have asked at least 10 questions on the site. (I have not done so myself, which may be the source of my failing.)