Could it possibly be on purpose? Aliens supposedly use screen memories, maybe they also plant these familiar images, so as to alleviate fears or to comfort an abductee. Could be the same reason abductees (used to) claim the aliens said they were from Mars or Saturn. Maybe they are just told what they'd understand at that point in time.
Edited by Sweetpumper, 03 April 2013 - 06:47 PM.