In other words, "The Murders in the Rue Morgue" is like a database of evidence – the three silver spoons, the twenty or thirty blood-smeared grey hairs, the windows locked from the inside – and Dupin is like the search engine that picks out what we need to know when we can't figure it out for ourselves. The thing about search engines is, they're not exactly social – we can't remember the last time we had a conversation with Google – and Dupin's no exception. Most of the details Poe gives us about Dupin's background and interests seem designed to show us that he's not great at playing with others.