It's knowing your punchline, your ending, knowing that everything you're saying, from the first sentence to the last, is leading to a singular goal, and ideally confirming some truth that deepens our understandings of who we are as human beings.
Es conocer tu remate, tu final, saber que todo lo que uno dice, desde la primera a la última frase, conduce a una meta, y, a ser posible, confirma alguna verdad que profundiza nuestra comprensión de lo que somos como humanos.