As remarked before in this journal, the underlying process of the game of "How Many Children Had Lady Macbeth?" provides some interesting fundamental similarities and dissimilarities to other processes of inquiry: to a detective investigating a mystery, to a scientist developing a theory, to the work of logicians, linguists, and lawyers. So it should be in no way surprising that while going through my favorite blogs, I came across several matters of interest which speak to the philosophical issues at hand in the way we go about our canon-formation (speaking of canon here as a set of "facts" about a fictional and/or actual world derived from a text, rather than as the text itself).
( Language Log, Volokh Conspiracy, and Original Meta )
( Language Log, Volokh Conspiracy, and Original Meta )