The idea is that there is a kind of memory in nature. Each kind of thing has a collective memory. So take a squirrel living in New York now. That squirrel is being influenced by all past squirrels.
When I get recognized for 'Twilight ' it's usually a teenage girl and they're usually really loud. So it certainly feels like I get recognized the most from that but it could just be because of the nature of how vocal those fans are.