"Something that long term wouldn't cause damage in the sense of a wound," Ghost says. "The neural connections wouldn't be broken, they'd have developed incorrectly. Again, especially considering your age."

Senku would have been in his mid teens somewhere, four years ago. That's a period where there's a huge amount of brain development - even if developmental neurology isn't his specialty. Morgan, for all his focus on learning and memory, primarily worked with adults. (A bitter part observes that there aren't that many teenagers sent to Russian death camps.)

"I'd love to get a look at that," he comments regarding the girl, "but it's what it is. I'm no diagnostician, but I can at least take a look for anything glaringly wrong, if you want."