question:  Why does everyone in the future have hyphenated names?
context: A gun is an interesting weapon; it can be hired, of course, and naturally doesn't care who hires it. The pleasurable, comfortable, warm feeling began spreading over him, the way it always did. The evening was dark, it was unlikely that the other even saw the circle of steel that was the mouth of the shotgun barrel, now resting on the car's window ledge. And at that moment, the universe caved inward upon Joseph Marie Prantera. There was a falling through all space and through all time. The other spoke precisely and slowly, the way a highly educated man speaks a language which he reads and writes fluently but has little occasion to practice vocally. His father hadn't brought him to the States until the age of five and by that time he had a stepmother. He looked out, however, not on the lawns and walks of a sanitarium but upon a wide boulevard of what was obviously a populous city. Two were seated there now, papers, books and soiled coffee cups before them. He wondered, all over again, if this was some kind of pressure cooker. The maternal linage was almost universally ignored." Whatever the something else was, a slot opened in the middle of the table and a glass, so clear of texture as to be all but invisible, was elevated. "To Nuevo Los Angeles and to the year—" Brett-James looked at his companion. "What is the date, Old Calendar?" "2133," Reston-Farrell said. Warren Brett-James said softly, "Mr. Prantera, you are no longer in the year 1960, you are now in the year 2133." Briefly, we have transported you, I suppose one might say, from your own era to ours." Reston-Farrell said, "Suffice to say, you are now one hundred and seventy-three years after the last memory you have." The two men of the future said nothing more for long minutes while Joe Prantera's mind whirled its confusion.
output:  In the future, they honor the maternal lineage.
options:  Everyone in the future is pretentious.  In the future, they honor the maternal lineage.  In the future, they have such a large population it was necessary to differentiate between citizens.  Everyone in the future uses the name of both spouses.