This I don't get.
Why do fictional works so often have a disclaimer to the effect that "Any resemblance to actual persons -- living or dead -- is purely coincidental."? Especially in cases where it's clear it isn't true?
Are there libel issues?
It seems inherently disingenuous (since fiction is always based to some degree on the author's experiences, see edit your life), and also unnecessary -- since calling something "fiction" means it isn't meant to be an accurate retelling of real people or events.
Am I missing something?