I hear variations on this theme all the time from readers. Titrating fact and fantasy can give a story a mysterious energy. Writers fetch up those details that sate the senses, allowing us to touch and taste, hear and feel how things were once upon a time. A woman steps out in Gilded Age New York City. Would she wear muslin or silk, petticoats or a hoop of whale baleen? Short kid gloves or long satin ones? How deep is her decolletage? All the particulars, please!