Ontology, taxonomy - what is all this stuff about? You end up with this issue of as designed, as built, as delivered, and then there's as maintained because things get swapped changed.

Ontology is a really critical part of tracking complex assemblies and processes, whether it's in a building, an aircraft, a ship, a process plant - whatever it is there will always be changes and modifications over the life cycle and to really understand something as a digital twin it has to be something that will actually grow, evolve and change over time.

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