Living with Bob and "Al"

It is very hard to undo information in "Al's" brain. Sheri dialed up Bob's only brother for him yesterday. Sheri thinks his brother maybe having a few memory issues as well, because he keeps leaving messages on Sheri's phone that he hasn't talked to Bob in a long time, even though that is not so. Anyway, some how out of the conversation Bob heard that one of their sisters had died, this was not true, but it set "Al" into a questioning tale spin. That one topic turned into a half a dozen other untruths that "Al" is now stuck on. Sheri tries hard to filter that information that Bob hears. The biggest reason is selfish she guesses, it hard to give correct answers when the question has no merit ... in the first place.