Reader question: Goal Tree vs. Current Reality Tree

Here is a reader's question: I have difficulty seeing the difference between the Goal Tree and the  Current Reality Tree (CRT). With these two trees we assess the process. What are the main differences between the two? The Goal Tree and Current Reality Tree (CRT) have nothing in common. They are not even meant to care … Continue reading Reader question: Goal Tree vs. Current Reality Tree

What is a critical root cause?

A root cause is the beginning of the cause-effect relationship*. Thus when working down the chain of causes and effects from a problem to its cause, a Root Cause Analysis (RCA) meets causes themselves being effects of some underlying causes and so on, down to the root cause from which everything about the problem originated. … Continue reading What is a critical root cause?

What are Undesirable Effects?

Undesirable Effects (UDEs) in the Thinking Processes/Logical Thinking Process lingo are effects undesirable in/for a system, a process or its stakeholders and clients. The UDEs are hindrances to better throughput or higher performance, or obstacles to achieving the system's Goal. In this post I present two "understandings" of the UDEs. The first is ToC's Thinking Processes, … Continue reading What are Undesirable Effects?

What is a Current Reality Tree?

The Current Reality Tree (CRT) is one of the Theory of Constraints (ToC) Thinking Processes (TP) tools. A CRT is built on Undesirable Effects (UDEs) linked by logical cause-effect-cause relationship called “sufficiency”. Sufficiency logic relationship is in the form of “if A is true then B is true”, or “if A exists, then B exists”. … Continue reading What is a Current Reality Tree?