Oftentimes what happens is that the writer understands one character, but they don't understand the other one, and the other one ends up not being written as well.
“Evil borders upon good, and vices are confounded with virtues; as the report of good qualities is delightful to a well-disposed mind, so the relation of the contrary should not be offensive.”
“I don't think many people anticipated how the Internet was going to revolutionize the way we disseminate information.”