Subsequent drafts, writers create more layers, each of which benefits from the use of authentic details. Authentic details "show" who the characters truly are by the objects they surround themselves with and how their actions support their dialog, and allow the reader to sink into the exotic, unusual story world.
For example: Einstein's Dreams by Alan Lightman -- "... In some distant arcade, a clock tower calls out six times and then stops. The young man slumps at his desk. He has come to the office at dawn, after another upheaval. His hair is uncombed and his trousers are too long. In his hand he holds twenty crumpled pages, his new theory of time, which he will mail today to the German journal of physics..."
Authentic details make the story unique, come alive, pulse with meaning.
Research reveals authentic details. How do you find yours?