Remember those 11,000,000 bits of information our five senses are lobbing at us every second? They are sensory details. Yet our brain knows that we need to be shielded from at least 10,999,960 of them. The only details it lets through are the ones with the potential to affect us. The same is true of your story. Your job is to filter out the details that don’t matter a whit so you can have plenty of space left for the ones that do.
