The teasing got extreme in the latest season. In the finale two-parter, The Master and Missy met , leading to several discussions on gender and its role in Gallifreyan culture. The Doctor remarked to Bill that “ We’re the most civilized civilization in the universe. We’re billions of years beyond your petty human obsession with gender and its associated stereotypes. “, and later when asked by The Master if the future was “ all girl ” replied, “ We can only hope. ” These final points are important as they take what could be read as opportunistic and tie it back into the character as originally conceived.