Summary: How much fun would it be to not know where they're going until they get there?
“So, where to now?” The Doctor bounced on his toes, his grin so wide he looked a bit mad.
“I don’t know.” Martha was at a loss. She’d been to the past, the future, and a few worlds the Doctor had suggested, but being asked to pick a destination when there was a whole universe and all of time to choose from… “Have you ever just picked somewhere at random? Closed your eyes and just pointed to some place on a map?”
If anything, the Doctor’s grin got even wider. “Brilliant, let’s do that!”