brainstorming ideas

Is an editor's job more working alone or with a lot of people, or does it depend on the job?
How do editors know, better than a writer, what the audience needs?
Why do they need to track the flow of documents through an organization?

Others:
How do editors make the choice to include or exclude material from a book? How do they know what will appeal?
How do editors organize their work areas? How does this affect their work?
How does a technical writer sort through their info to decide what is worth publishing and what can be discarded?
How do editors deal with controversial subjects or things they don't believe in?
When two or more PW's collaborate on a given project, how do they divide the work and avoid "too many cooks in the kitchen"?
What kind of ethics do technical writers have?
What does it take for a technical writer's work to be respected and used?
How does a PWE stay motivated while working on topics nor particularly interesting?
How much knowledge should a PWE have on a subject before writing about/working with it?
What type of training beyond an undergrad degree is required to work in marketing and corporate communications?