Another reply to another post by Ian Sales:
- Leave enough room in your prose for the ambiguity that recruits the reader's imagination as a willing collaborator.
- Sometimes, it's best if you let the reader map out that last ramification of the ideas in the story.
- Leave enough room in the plot for the reader to have something to ponder over later.
- Get the details right (and that means research).
- The resolution needs to be a natural consequence of your intentions in writing the story.