Wren worked well on reassurance, repetition and reducing things down to their most basic components, the new '3Rs' that were slightly more helpful to him than the old ones would have been. The world confused him, not helped by the way his broken brain stopped him from retaining information as easily and how he was always on the edge of slipping into flashbacks and memories that he wouldn't have been able to articulate after experiencing them. He was very much a creature of the present, with his past was a mire of fog and terror and the future not something he ever thought about. It helped him survive out there in the woods, but it didn't translate well to moving among living people.
He forgave Archie's apology with a kind of bewildered comfort and then his mouth immediately watered at the smell of the pizza when Archie opened the lid. He sipped at his milkshake, blinked at the cold and then set it down to the side the way Archie had suggested, unable to comfortably juggle both the cup and the pizza without worrying about making a mess.
"Oh, I had some like this before!" he exclaimed at the pizza, tilting his head at it. "But just the side pieces and it was a bit green." It had been fished out of a dumpster and had ended up making him violently ill with the mould that covered it.
"No, I like the films!" he chirped, although it was a bit of a stretch letting Wren answer that question himself. Nothing upset him until it was in the process of upsetting him and he didn't have the wherewithal to think about things that could upset him in potentia.