Who knew we could coexist with vampires if we give each some kind of dialysis machine? Imagine the kind of cultural works someone with centuries of experience could create. Imagine a vampire historian!
If they haven't recorded it in some way then it doesn't matter. And if they have, then it's what a human historian could do too.
Can you recall well what you did ten years ago to the day? How much is a vampire is going to accurately recall from a hundred years ago?
At best, the vampire has bragging rights like "I hung out with Gandhi."
We'd need some evidence the vampire has super-recall AND is somehow trustworthy enough to not change the story depending on motivations of the day.
If they haven't recorded it in some way then it doesn't matter. And if they have, then it's what a human historian could do too.
Can you recall well what you did ten years ago to the day? How much is a vampire is going to accurately recall from a hundred years ago?
At best, the vampire has bragging rights like "I hung out with Gandhi."
We'd need some evidence the vampire has super-recall AND is somehow trustworthy enough to not change the story depending on motivations of the day.