A concept is a structure that is invented to give a coherent account of the immediate consequences of actions in a complex system.

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• A concept is a structure invented to give a coherent account of the immediate consequences of actions in a complex system.claim0.962
  Jackson's operational definition of a software concept.
• Concepts are cognitive structures that give coherent account of immediate consequences in complex systemsclaim0.872
  Jackson's core assertion about the role of concepts as explanatory structures bridging action and consequence
• Concepts are not just subjective mental constructs, but are objective features of a system's design: increments of functionality that were consciously introduced by a designer to serve particular purposes.concept0.837
  Central definition from the abstract.
• Conceptconcept0.835
  Central entity of Jackson's framework: a structure invented to give coherent account of immediate consequences of actions; the building block of software design
• Concepts are the building blocks of software systems, objective features of a system’s design.claim0.830
  Asserts that concepts are not just mental but concrete design elements.
• Concept (software design entity)concept0.828
  An increment of functionality consciously introduced by a designer to serve a purpose; the building block of a system's design.
• Concept (Formal Concept Analysis)concept0.815
• What exactly is a 'concept' and how do we distinguish good concepts from bad ones?question0.808
  Jackson identifies this as a central unresolved research question despite widespread recognition of concept importance