She hardly ever began conversations with strangers just to talk. It was not a matter of shyness. For her, a conversation had a straightforward function. How do I get to the pharmacy? or How much does the hotel room cost? Conversation also had a professional function. [...] When she worked as a researcher [...], she had never minded having a long conversation if it was to ferret out facts. On the other hand, she disliked personal discussions, which always led to snooping around in areas she considered private.

Stieg Larsson