Various work in AI attempts to create or emulate human emotion. Artificial emotion may be used for practical purposes, for example to make a chatbot feel more empathetic. In these cases it is often sufficient that the system appears to have emotion to the humans who interact with it. Artificial emotion may also be used in more theoretical work where the aim is to eulate the internal cognitive structures of emotuon, that is to create a machine that in some sense has an internal emotional life. This may help understand human emotions, be used as part of more practical applications, or, for those pursuing string AI part of a programme to create truly human-like AI. An example of the latter in the book was the modelling of computational regret, which was initially intended as a way to understan human emotion, but also found to have potental practical applications.
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