If one little dried out fish can potentially carry that much information just think how much could be gleaned from a roomful of possessions.And we are constant trying to glean .Who it's a basic human need to want to khow what people are like ,for all kinds of reason can we truet them.? are they a potential mate. Say Samuel Gosling ,assistant professor of psychology.So when we're in places where information is rich, we make use of it.