REPLY System Dynamics without Feedback (SD6486)

[SDMAIL Fabian Fabian]

Posted by  Fabian Fabian <f_fabian at yahoo.com>

Kazem,
   
  If the operational reality you are trying to model is without feedback 
  (assuming you're modeling a slice of reality which has that kind of structure), 
  then you'll find yourself having a valid system dynamics model, even though it 
  is without feedback.
   
  With the simplest generic example, if you model a constant inflow which 
  contributes to the growth of a stock, you will obtain a - dynamic - linear 
  behavior of the stock variable. And yes, it will be a valid system dynamics 
  model.
   
  Of course it would be valid contrasting it against a very thin slice of 
  reality.
   
  Be well...
   
  Fabian Szulanski
  Director- System Dynamics Centre
  Buenos Aires Institute of Technology
Posted by  Fabian Fabian <f_fabian at yahoo.com>
posting date  Tue, 19 Jun 2007 06:10:37 -0700 (PDT)