Business process modelers would think of humanprocess activities being invoked by business processes.
业务流程建模人员会认为人工流程活动是由业务流程调用。
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If humanprocess activities were part of the consumer layer, from a process modeler view this would effectively mean that the business process layer invokes the layer above.
An archaean converts DNA into proteins very differently from, say, streptococcus-in fact, protein synthesis in archaea is more similar to the humanprocess than to bacteria.