I always work from an outline, so I know all the of the broad events and some of the finer details before I begin writing the book.
Each organism, no matter how simple or complex, has around it a sacred bubble of space, a bit of mobile territoriality which only a few other organisms are allowed to penetrate and then only for short periods of time.
I think we've established a convention on the show that allows us to do pretty much anything we want to.

