Kio Stark likes to talk to strangers.
She doesn't like "civil inattention" - people who pretend to be in their own private worlds in a public place, refusing to acknowledge anyone.
She writes about the power of "hello" and the unexpected pleasures of conversations with people you don't know. Her book, When Strangers Meet has tips for talking to strangers and throws down the gauntlet to anyone who wants to give it a go.