I have a silly question. Why are the final five (four of them anyway) so convinced that they are Cylons? As far as I can tell, they kept hearing music, which led them to some closet where they met. I know that there is a general paranioa about "skin jobs", and they have established that someone could be a Cylon without knowing it, but do they have any other proof or hints that they are Cylons (other than the opening credits?
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