3.10. Modelling Atoms
From the foregoing discussion, we can see that an information system will need to store snapshots of atoms, which will have certain kinds of attributes, some of which we have already identified.
3.10.1. Identifiers
For a system to model atoms and events in the outside world, it must communicate with it using messages. Data must be collected from the system’s environment, and results must be sent to it. The system needs to have a means of knowing which (real-world) atoms are associated with input data, and it needs to know where to send output data.
In a hard-wired system like an aircraft, its various sensors and controllers may be connected to the control system by a bus, and each will have a unique hardware address that identifies ...
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