Yes, I was wondering if it would give clues as to who they were.

[ Jack's curious and he thought maybe he could lay the item to rest. It might seem like a strange detail, but it's common for beloved items to need to be burned to keep from ghosts coming back in his world. But he's pretty sure androids aren't ghosts, and if they were, they'd already be seeing them. He tucks the diary back into the android's hand. ]

Maybe they were. There are times when people can change species.

[ Jack himself has done that before, turning humans into angels. It's not common but this is from a whole other world, there's no reason to assume it's impossible. ]

It's sad, I think. Almost like a graveyard.