Program Evaluation and Review Technique (PERT) with ConceptDraw DIAGRAM

"Feedback is a process in which information about the past or the present influences the same phenomenon in the present or future. As part of a chain of cause-and-effect that forms a circuit or loop, the event is said to "feed back" into itself. ...
Feedback loop - the complete causal path that leads from the initial detection of the gap to the subsequent modification of the gap. ...
Feedback is commonly divided into two types - usually termed positive and negative. The terms can be applied in two contexts:
(1) the altering of the gap between reference and actual values of a parameter, based on whether the gap is widening (positive) or narrowing (negative),
(2) the valence of the action or effect that alters the gap, based on whether it has a happy (positive) or unhappy (negative) emotional connotation to the recipient or observer." [Feedback. Wikipedia]
This cycle diagram example was redesigned from the Wikimedia Commons file: Business Feedback Loop.jpg. [commons.wikimedia.org/ wiki/ File:Business_ Feedback_ Loop.jpg]
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. [creativecommons.org/ publicdomain/ zero/ 1.0/ deed.en]
The ring chart example "Business feedback loop" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Target and Circular Diagrams solution from the Marketing area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ marketing-target-and-circular-diagrams

This cycle process chart was redesigned from the Wikimedia Commons file: Business Feedback Loop PNG version.png.
"A business ideally is continually seeking feedback from customers: are the products helpful? are their needs being met? Constructive criticism helps marketers adjust offerings to meet customer needs."
[commons.wikimedia.org/ wiki/ File:Business_ Feedback_ Loop_ PNG_ version.png]
The cycle process diagram example "Business feedback loop" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Sales Flowcharts solution from the Marketing area of ConceptDraw Solution Park.