Background in the Background

There's one way I know to switch off a persons brain and it's for me to start yabbering on rapturously about the background to my story. Yeah, look it's fascinating to me but only elicits an alarmed or bored look in others. One day if I have written a massive best seller, people may be riveted with these details. Until then, I shall only produce a little of these reams of info when and if necessary, into my story. If you have read the Appendix to Lord of the Rings (Hail Elf-friend!), you may may disagree, but sometimes your obsession is other peoples cause for sleep.