Living with Bob and "Al"

Bob keeps telling Sheri that he is surprised the cat doesn't knock over the plates in the china cabinet. The first couple of time he said it Sheri was not really paying attention. This morning he said it again, seeming very distressed about the situation. Sheri said "'Bob the cat can't get in there are glass doors in front of the shelves. "Al" replies " well the bottom shelf is doesn't have any glass, so she is going to get right in there and knock them over." Sheri got up and tapped on the glass to show him the glass is there, then she realized that from Bob's favorite chair he can not see the reflection of the glass down by the last shelf. Bob's Alzheimer mind then decided there must not be glass there. Not giving any rational to the fact that the glass would have to stop in the middle of nowhere on the glass door to the china cabinet. Sheri thinks it is so sad the Bob is trapped in "Al's" confused mind. Sheri hates this disease.