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This Focused Performance Weblog started life as a "business management blog" containing links and commentary related primarily to organizational effectiveness with a "Theory of Constraints" perspective, but is in the process of evolving towards primary content on interactive and mobile marketing. Think of it as about Focusing marketing messages for enhanced Performance. If you are on an archive page, current postings are found here.

Wednesday, October 23, 2002

On the other hand...Constraints & JIT - Not Necessarily Cutthroat Enemies - This APICS Advantage article by TOC luminaries Bill Dettmer and Eli Schragenhiem (co-authors of Manufacturing at Warp Speed: Optimizing Supply Chain Financial Performance) provides an insightful view into the commonalities between DBR and JIT. They summarize by saying...
"If you truly want to compare two different management approaches, don't focus on their techniques and tools. If we'd done so here, we'd have seen two seemingly very different processes. After all, drum-buffer-rope (DBR), the TOC planning methodology, doesn't seem to have much in common with kanban cards. In fact, in some respects the tools of DBR might seem to have more in common with advanced planning and scheduling (APS) systems than with JIT or lean production. But this isn't the case. The TOC paradigm is much closer to JIT than it is to APS. The search for simple, effective rules is common to both TOC and JIT, but it's alien to APS. This kind of insight isn't clearly visible if we look closely only at detailed techniques.

"The similarities between JIT and TOC are many. The areas of difference are few. Key differences lie primarily in considerations that TOC addresses and JIT does not. The underlying reason for these differences is that by its very nature, TOC takes a broader view of systems management than does JIT."
Of course, Bill and Eli are talking about the underlying goals and philosophies of these two approaches to management. The other blog entry in this post talks about the relative performance value of going down one route versus the other.

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