“Smile” is, in many ways, Doctor Who’s most recent response to today’s social and political climate. In the face of tragedy and unrest comes the search for optimism and happiness. In a futuristic Earth colony, the Doctor and Bill explore the dangers of happiness and the pitfalls of pure optimism. With a mixture of familiar technology—communicating rudimentary emotions through emojis—and advanced micro bots known as the Vardi comprising the entire structure of the colony, this futuristic utopia is the exact excitement Bill is looking for. She meets every discovery with curiosity and amazement. “Thanks for bringing me,” she says. “This is a great day out.” Nothing is what it seems, however, and when the Vardi see grief as the enemy of happiness, the survival of the whole human race is at stake.
It’s an interesting look at the relationship between man and technology, and the never ending cycle of grief. Such a strong emphasis on happiness led to oversimplification, creating the very opposite of the intended. When everything is black and white, it simultaneously becomes man’s downfall and the Vardi’s survival.
With big ideas, the episode falls a little flat. Despite smiling proving to be a great source of physical comedy on Capaldi’s part, the humor couldn’t always carry the story. Perhaps it’s because talking so much about happiness always comes with the caveat of talking about grief. Ironically called “Smile,” there isn’t much room for smiling. Through all of the twists and turns, everything seemed so predictable. But Bill is still delightful, and her teacher/pupil relationship with the Doctor is still fun. They make a good team and ultimately save the episode.
The Doctor asks Bill, “Do you know why I always win at chess? Because I have a secret move: I kick over the board.” Sometimes the simplest solution, is the best solution. In an episode asking big questions, the best part is the Doctor and Bill. 
3 out of 5 emojis
