"We can. There's a great many things I don't understand about the Fleet because Westeros doesn't have them," Sansa admits. "I usually just accept them as the magic of the place but sometimes, if I get too curious, I ask Vision to explain them for me. He's quite patient in these matters."

She wonders if Vision could explain why the plants and animals glow here - it's something she thinks Bran might have been interested in, as a boy; he'd always been a reader unlike Sansa or Arya.

"I shall have to ask him about this planet and see what he thinks. He explained electric lights to me once and if I were clever enough, I might be able to build them back home."