Our brains tell us to look at things that move with intention. Consider a magic trick. The magician gives the impression of great intention with one hand, while lulling the audience into believing the other hand is unimportant, with no hidden motive. When the trick is complete, the hidden motive of the unnoticed hand gives the act a magical quality.

Stories work the same way. While it is important to have characters with dramatic need whom give the story focus and interest, do not shy from creating characters whose inclinations which aren’t as strong. These are the characters who can provide unexpected turns in a story which otherwise might be too obvious.