You might find this thread useful: https://news.ycombinator.com/item?id=9716837 https://news.ycombinator.com/item?id=9716837 There was also a popular story on

You might find this thread useful: https://news.ycombinator.com/item?id=9716837 https://news.ycombinator.com/item?id=9716837 There was also a popular story on there the other day (which I've been unable to find) about how people engaging in deceptive behavior could be detected via topics of speech.