Ontological crisis is a term coined to describe the crisis an agent, human or not, goes through when its model - its ontology - of reality changes.

In the human context, a clear example of an ontological crisis is a believer’s loss of faith in God. Their motivations and goals, coming from a very specific view of life suddenly become obsolete and maybe even nonsense in the face of this new configuration. The person will then experience a deep crisis and go through the psychological task of reconstructing its set of preferences according the new world view.

When dealing with artificial agents, we, as their creators, are directly interested in their goals. That is, as Peter de Blanc puts it, when we create something we want it to be useful. As such we will have to define the artificial agent’s ontology – but since a fixed ontology severely limits its usefulness we have to think about adaptability. In his 2011 paper, the author then proposes a method to map old ontologies into new ones, thus adapting the agent’s utility functions and avoiding a crisis....

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