EDIT: I would consider autoencoders, word2vec, Reinforcement Learning examples of turning a different problem into a supervised learning problem
EDIT 2: Social functions like happiness, emotion and fairness are difficult to state - you can't have a supervised learning problem without a loss function
In longform if anyone is interested https://medium.com/@marksaroufim/can-deep-learning-solve-my-...
EDIT: I would consider autoencoders, word2vec, Reinforcement Learning examples of turning a different problem into a supervised learning problem
EDIT 2: Social functions like happiness, emotion and fairness are difficult to state - you can't have a supervised learning problem without a loss function