When a kin has a dream, how do you know it’s from a memory? How do you know it’s not just a plain old dream? Or if it’s a lucid dream? Even if it contains you’re type of kin or fiction kin, how can you tell?
Memories that come in dreams have a quality of verisimilitude that other dreams lack. They connect well with other memories you have. They don’t have any fantastic or weird elements that aren’t part of your kintype’s life.