This is the type of question that DO deserve to voted to be closed. Badly formulated, improperly researched, and by someone who is supposed to have enough exposure to mathematics to do a bare minimum of both. — user752802 Mar 8 at 11:09
I don't see what's so wrong with Martin's billiard ball question.
It is an interesting question and as researched as I would expect for someone a natural question about a field they are unfamiliar with and trying to get a window on.
Personally I find the comment quoted above from user752802 to be out of proportion to the situation.
If ever there is a risk of confusion I am talking about the credibility of the (deleted) account that had written the quoted comment, obviously not user21820.
