====== Zen of application design ======

  * Keep things as simple as possible, but not simpler (**KISS**)
  * Before doing things twice, think twice (**DRY**)
  * If things start to get too complex, **decomposition** is needed.
  * Divide et impera - If things get too complex, split them up into smaller pieces and code them separately.
  * If decomposition does not help, **management** is needed.
  * Keep in mind: **There's a beauty in design**. If you find something in your code which looks quite ugly, there is something wrong with it. You probably can do it better.


Marc-André Lemburg
(EuroPython 2013)