Collection of items related with theory. Definitions, discussions, etc.

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====== What is Systems Engineering? ======

<mermaid>
  classDiagram
  Systems Engineering -- |> Complex Systems : delivers
</mermaid>


===== What is Engineering? =====

<mermaid>
  classDiagram
  Engineering -- |>  Science : applies
  Engineering -- |>  Engineering : applies
  Engineering -- |> Systems : delivers
</mermaid>