"Who knows what it is," the Doctor said, thoughtfully. He'd seen Chase come out, saw Kayla come out looking remarkably happy, and he could only hope. "Maybe it's neither. Pocket universe--real in some ways. Real to her, at the very least. And honestly, Rob, that's part of what matters."

He thought about giving Chase a hug, but settled for putting an arm around his shoulders. "Let's get some coffee."