"It might not be, but it would be unwise for I or Xamot to even consider attempting it, as this is our first visit to your world. Once we have known it better we might consider asking then. There is no rush."
One thing at a time.

"I think it is because it is a simple concept that makes it hard to grasp. Sometimes, I think we unnecessarily complicate things when thinking about things like being one's own self. I have done it myself a time or two."
The Rubik's puzzle they now have serves as a reminder that simple things can have profound impacts. It's not just a toy it's a metaphor, too.