What Does the Reader Need To Know?

Research is fun. Fun. Fun.However, research for the writer's sake isn't always needed for the reader's sake. I get questions about this a lot.The writer may need to know the mechanics of a specific task. For example, in 1901 in New Jersey, where does ice come from? How often does the ice man deliver? What does the heroine do with the ice after it's brought to her house? The reader, however,