(CHAPTER 09)

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  Choice of management patterns is a result of pressure exercised by outside
  demands.



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Game of Control

  * Intervention dynamic

  => Largely affected by human decisions on how to regulate a process, serves
  as a means to control or mitigate the effects of Natural Dynamics.

  => Example: Brook's Law - "Adding manpower to a late project makes it later."

  * Natural dynamic

  => Beyond direct human control. Human decisions in the form of Intervention
  Dynamics are imposed by the circumstances.

  Example: A management pattern is an Intervention Dynamic, however, the choice
  of using a pattern is imposed by Natural Dynamics.



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Natural Dynamic

  * Example: Square Law of Computation

  * How can any organization handle growth in complexity?

  => Simplifications made by applying general principles.

  Chess: castle early, don't jeopardize your queen, ...
  PM:    keep team sizes small, break work down into modules, ...



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Square Law of Computation

  """
  Unless some simplification can be made, the amount of computation to solve a
  set of equations increases at least as fast as the square of the number of
  equations.
  """



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Size/Complexity Dynamic

  Square Law of Computation combined with the fact, that we cannot alter our
  brain capacity quickly or indefinitely.

  With SW development being a very complex and non-deterministic process, the
  fact that it is done by humans, whose intellectual capacity is limited, makes
  it even more difficult.



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Variations:

  * Fault Location Dynamic:

  As the system grows, the number of errors *and* the number of places to *look*
  for errors increase, which makes bug-squashing a non-linear effort.

  * Human Interaction Dynamic:
  
  As the number of people (staff) increases, also the interactions per person
  increase and the number of total interactions (in a team) grow immensely.