Comments on: There Is No Iron Triangle In Project Management http://www.projectshrink.com/no-iron-triangle-project-management-293.html Welcome To Shrinkonia. Thu, 09 Feb 2012 06:24:55 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Bas de Baar http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-683 Bas de Baar Sat, 21 Feb 2009 23:50:38 +0000 http://blog.softwareprojects.org/?p=293#comment-683 The link to the Gilb article doesn't seem to work. Goto the Gilb site: <a href="http://www.gilb.com/tiki-list_file_gallery.php?galleryId=15" rel="nofollow">http://www.gilb.com/tiki-list_file_gallery.php?...</a><br>Scroll down or search the page for "Managing Priorities", you can download from there... lots of other good stuff there to The link to the Gilb article doesn't seem to work. Goto the Gilb site: http://www.gilb.com/tiki-list_file_gallery.php?…
Scroll down or search the page for “Managing Priorities”, you can download from there… lots of other good stuff there to

]]> By: Bas de Baar http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-682 Bas de Baar Wed, 20 Aug 2008 18:56:45 +0000 http://blog.softwareprojects.org/?p=293#comment-682 wow alex... there seems a lot of whipping going on in your part of the world... sorry to hear. But believe me, there are also companies where this is not end of story. Take care! Hope you find your dream employer soon. wow alex… there seems a lot of whipping going on in your part of the world… sorry to hear.

But believe me, there are also companies where this is not end of story.

Take care! Hope you find your dream employer soon.

]]> By: Alex http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-681 Alex Wed, 20 Aug 2008 15:21:25 +0000 http://blog.softwareprojects.org/?p=293#comment-681 Project Managers exist to drive down programming costs and whip programmers to deliver faster because CEOs get tired of doing it. The primary benefit of outsourcing is that whipping empolyees oversees and sweat shops are more acceptaed then in the USA. That is it. End of story. Project Managers exist to drive down programming costs and whip programmers to deliver faster because CEOs get tired of doing it.

The primary benefit of outsourcing is that whipping empolyees oversees and sweat shops are more acceptaed then in the USA.

That is it. End of story.

]]> By: Bas http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-680 Bas Fri, 18 Jul 2008 05:55:23 +0000 http://blog.softwareprojects.org/?p=293#comment-680 Hi Glen, thanks for the insightful comment... I really have to think about this one :) Cheers, Bas Hi Glen, thanks for the insightful comment… I really have to think about this one :) Cheers, Bas

]]> By: Glen B. Alleman http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-679 Glen B. Alleman Wed, 16 Jul 2008 14:22:52 +0000 http://blog.softwareprojects.org/?p=293#comment-679 bas, As the poster in your first reference says "constraints are NOT indepedent from each other." You may be interpretating the triple constraint wrongly. I see your point about more than three. Here in space and defense the three are Cost, Schedule and Techncial Performance. TP captures ALL the dependent and i ndependent variables, quality, requirements, etc. Eveythhing that is not cost or schedule. If there is a change in the requirements (the technical performance measures), and if there is a change in the cost and/or the duration to deliver this new change - then there is a casual connection between cost, schedule, and techncial performance. If there is no causcal connection, then there there is no triangle. The determiniation of these causal connections of the domain of the "triangle." I know of no non-trival project requirement where thre is not a causal connection between cost, schedule, and technical performance. Hence the "triangle" of dependent variables. Once this casual connection is made, ONLY THEN can the tradeoffs Tom speaks of be made. Prioritization, seqeuncing, resource allocation and other "adjustments" to the project plan can be made. These decisions are based on knowing what impacts there are on the other Dependent variables of the triangle. This is the basis of portfolio management, programmatic risk analysis, and schedule optimizaiton - probablistic critical paths. So if you roll up the collection of depedent variables into classes of Cost, Schedule and Not-cost&schedule you get three - a triangle. This notion that quality of the third leg is obsolete and no longer valid in any modern defense or space project. Thanks for the great post. Glen B. Alleman VP, Program Planning and Controls Aerospace and Defense Lewis & Fowler Denver, Colorado bas,
As the poster in your first reference says “constraints are NOT indepedent from each other.” You may be interpretating the triple constraint wrongly. I see your point about more than three.
Here in space and defense the three are Cost, Schedule and Techncial Performance. TP captures ALL the dependent and i ndependent variables, quality, requirements, etc. Eveythhing that is not cost or schedule.
If there is a change in the requirements (the technical performance measures), and if there is a change in the cost and/or the duration to deliver this new change – then there is a casual connection between cost, schedule, and techncial performance. If there is no causcal connection, then there there is no triangle.
The determiniation of these causal connections of the domain of the “triangle.”
I know of no non-trival project requirement where thre is not a causal connection between cost, schedule, and technical performance. Hence the “triangle” of dependent variables.
Once this casual connection is made, ONLY THEN can the tradeoffs Tom speaks of be made. Prioritization, seqeuncing, resource allocation and other “adjustments” to the project plan can be made. These decisions are based on knowing what impacts there are on the other Dependent variables of the triangle.
This is the basis of portfolio management, programmatic risk analysis, and schedule optimizaiton – probablistic critical paths.
So if you roll up the collection of depedent variables into classes of Cost, Schedule and Not-cost&schedule you get three – a triangle.
This notion that quality of the third leg is obsolete and no longer valid in any modern defense or space project. Thanks for the great post.
Glen B. Alleman
VP, Program Planning and Controls
Aerospace and Defense
Lewis & Fowler
Denver, Colorado

]]> By: Bas http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-678 Bas Tue, 08 Jul 2008 16:37:42 +0000 http://blog.softwareprojects.org/?p=293#comment-678 Thanks for the comment Rich. Looking forward to the book. In anticipation we'll read your great blog :) Thanks for the comment Rich. Looking forward to the book. In anticipation we’ll read your great blog :)

]]> By: Rich Maltzman, PMP http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-677 Rich Maltzman, PMP Tue, 08 Jul 2008 13:59:47 +0000 http://blog.softwareprojects.org/?p=293#comment-677 Thanks for this article. Ranjit Biswas and I have written extensively about this - and it will be an entire chapter of our upcoming book, The Fiddler on the Project. In the meantime, read posts at http://scopecrepe.blogspot.com Thanks for this article.

Ranjit Biswas and I have written extensively about this – and it will be an entire chapter of our upcoming book, The Fiddler on the Project.

In the meantime, read posts at http://scopecrepe.blogspot.com

]]> By: Keep the focus on outcomes « Crossderry Blog http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-676 Keep the focus on outcomes « Crossderry Blog Mon, 30 Jun 2008 14:54:53 +0000 http://blog.softwareprojects.org/?p=293#comment-676 [...] Per a number of earlier posts on the triple constraint and scope (here, here, and Bas’s post here), project managers need to get better attuned to the outcomes and benefits of their projects’ [...] [...] Per a number of earlier posts on the triple constraint and scope (here, here, and Bas’s post here), project managers need to get better attuned to the outcomes and benefits of their projects’ [...]

]]> By: Bas http://www.projectshrink.com/no-iron-triangle-project-management-293.html#comment-675 Bas Sat, 28 Jun 2008 16:25:11 +0000 http://blog.softwareprojects.org/?p=293#comment-675 Also a good pointer on this subject: http://crossderry.wordpress.com/2008/06/23/more-on-the-triple-constraint/ Also a good pointer on this subject:
http://crossderry.wordpress.com/2008/06/23/more-on-the-triple-constraint/

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