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Ontology (What are the things that we are dealing with?) | Attributes (What are the defining properties or characteristics of each 'thing'?) | Epistemology (How do we get information about these things?) | Semiology (How do we represent these things in an impact accounting system?) |
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An agent Agents |
| Agent asserts their identity | Digital signature Demonstration of control (challenge-response) |
An activityActivities |
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A stateStates |
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A state changeState changes |
Someone or something gathers data
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