Frank over at Focused Performance has a great site here on Critical Chain & Project Management. It contains, among other things, an example of the Goldratt “evaporating cloud” diagram for the objective of managing projects successfully. It highlights the conflict between having or not having safety time in task duration estimates within projects. The evaporating cloud method is used to identify assumptions and either find invalid ones or come up with a new approach that satisfies the requirements without being in conflict with other prerequisites. In this case, the CC solution would be to replace the bottom prerequisite with something like “use buffers to manage uncertainty.”
I strongly suggest you check out Frank’s site if you want to learn more about TOC and Critical Chain.
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