You're welcome! During the last 4 years I have been learning the definition of "system" and how to apply "systems thinking." As always I can find what I am looking for on the web. I think this is one of the best explanatory sites http://www.umsl.edu/~sauterv/analysis/bees/.
I appreciate what the site says about our inability to "clearly perceive ourselves" in space, through time, and in "our relationships to what appear to be remote "objects, forces, people and events." Because it teaches us how to overcome "spatial blindness", "temporal blindness" and "relationship blindness", systems thinking routinely provides pragmatic ideas and deeper insights so critically needed today.