In the bottom bunk of a bunk bed, there sleeps a grey. (In the top bunk of same there also sleeps a grey but the bottom one is more immediately relevant.)
"I hope you don't have problems with the sun."
"I haven't noticed any. I guess I haven't been paying close attention. What kinds of problems?"
"People with skin disorders that mean they can't brown often get cancer."
"It's a disease where the body's mechanisms for cell population control stop working."
"How would I notice if I had that?"
"There's a lot of symptoms that can mean cancer - there are other ways to get it besides having a browning deficit - I'm not sure what the first thing one would notice would be."
"Can you show me what the cells do? So I can compare it to what mine are doing?"
"There might be pictures on the internet." She looks for pictures of cancer cells.
"Huh. I don't think mine are doing that but I don't understand cells very well, I might be keeping track at the wrong level or something."
"We can't track our cells; how do you do it?"
" - I just do?"
"Like - if you close your eyes and try to touch your nose you can still do it, right? Because you just know where your hand is and where your nose is? That, but paying closer attention to details."
"That's really neat. Our proprioception doesn't go that far down."
" - huh. Is that the reason some of you are mean and bad?"
"...I do not see how being able to propriocept our cells would fix that."
"I don't know. Just, there are these differences between us and also some people of your species are mean and bad so it seems like they might be connected. Maybe people who are mean and bad are hurting like orcs and if they could tell their body to not do that then they would be okay?"
"I don't think chronic pain problems are correlated with crime."
Shrug. Snuggle. "Maybe it's some other thing."
"You're very determined to figure this out. Would it be something we have in common with people from Bella's world, are they sometimes bad?"
"Yeah. But their world is terrible. I'd be terrible if I lived there. And wasn't dead."
"...what would you do?"
"Try to make it stop being against science."
"This might be unwise but it is not obviously evil or anything."