Critical Chain Analysis

Eliyahu Goldratt adapted this term in from his management philosophy "Theory of Constraints" in 1997 and is based not on tasks but on resources.

Critical chain analysis estimates 50% activity duration and leaves the other 50% as buffer to complete the task. As you consume 33% from the buffer as is green you need to watch, when buffers is 66% is yellow, you need to plan, and more than 66% you need to act.

Five Concepts

1. . - No date or milestones.
2. . - Activity duration estimates is reduce 50%.
3. . - Early Completion of task is rarely reported.
4. . -Multi-tasking only creates waste of time, concentrating on one job is more efficiently.
5. . -Buffers are used as a warning signal.