Also, it's conceivable for a machine learning algorithm to surpass humans in certain aspects, e.g.

- Identifying emotions of humans who grew up in a different culture, for which the ML algorithm may have piles of data from every part of the world and you don't

- Identifying emotions of babies based on instinctual behavior

- Identifying emotions of people who are undergoing a trauma response that most humans are not trained to recognize

- Identifying emotions of people during a negotiation process in which the people are actively trying to hide their emotions from humans but nevertheless leak certain signs of their true emotions