He and She: What's the Real Difference?

Usually people can tell things about an author beyond his/her writings. Writing styles portray to the personality of the writer. In more scientific writings it could be hard but in other cases you can definitely tell things about the author. Age can be generalized by the vocabulary, grammar/structure can make a person seem more intelligent or old. Sometimes I also believe you can tell if the author is a male or female due to topic, word choice, AND style. There are a lot of subtle things in writings that's kind of hard to explain but definitely hints to what the author is like.