More Project Management Equations; The Triple Constraint Override
With nearly 30 years in IT, I've come across pretty much every situation, whether it was managing commercial software product development, acquisitions and divestitures, systems conversions, you name it. And over that time, certain things jump out as tried-and-true principles.
One of them I call the triple constraint override. That is, irregardless of the usual triple constraint of time, cost, and scope (I won't get into the other four possible constraints), I have my own principle that overrides all that.
It involves two simple equations:
Speed is more important than cost.
Success is more important than speed.
In other words, if we act fast, cost will usually follow naturally. Delays can increase cost exponentially, whether it's the cost of lost opportunity, the cost of reduced momentum, or any other number of costs associated with the risks of delay. Sometimes, it might appear that we're spending more money by rushing (such as paying a little more for a service rather than waiting to get the best deal), but in the end, what is really saved by waiting? I argue that there are hidden costs in waiting that can negate any gains.
But even speed must take a back seat to success. Notice I didn't say quality. That's because it's not about perfection. It's about the success of the project, whatever you take that to mean. If speeding things up risks the success of the project to the point where there's a 50% chance or less of success, then the speed has turned into haste and it's a sign to slow down and develop a more realistic plan.
Like any rule or principle, there are exceptions, especially during some negotiation situations. but we must consciously make that decision after weighing the situation against the two simple equations I've mentioned.
Just something I thought I'd pass along.
Labels: constraint, principles, project-cost, project-plan, risk-management











3 Comments:
Jerry,
This is an excellent post. I have followed the same prioritization in the incremental implementation of Earned Value capabilities, I call Streamlined EVM:
1. Step T stands for putting technical success first. The indispensible measurement of project success is whether the work is being accomplished successfully. Even if you don't have scheduling tools and project-oriented acconting (which is rather common) you still have to focus on accomplshing the work.
2. Step S stands for schedule performance, and comes second. Performing with speed is important, but only after you've built the capability to perform technically.
3. Step C, stands for cost performance and is the hardest to accomplish, since it requires integration with accounting systems that may or not be timely and project-friendly.
Unfortunately, Traditional EVM seems to mention the purpose and benefits of EVM in the opposite order. After all, EVM started life as "cost/schedule control systems" and orginated with cost-plus contracts.
Triple Constraint Override or Triple Constraint Prioritization: Are we talking about the same thing?
/Garry
www.projectfrontier.com
Garry, very interesting. I hadn't thought about it that way, but yes, we're saying the same thing.
I liked the way you framed it as "prioritizing the classic triple constraint." Also, your steps make sense and are a very pragmatic approach.
I know some are even using critical chain buffer management for schedule control, and EVM for cost management (just to satisfy the accountants), but I'm still trying to piece together how that would work in practice. I also need to read up on Earned Schedule.
I know in the IT field, most organizations are not at the maturity level where they're integrated with project accounting systems (and many don't even track cost-period, especially for internal labor). This seems consistent with your findings.
But at the very least, they should use EVM for focusing on the deliverables and schedule performance. I've even seen organizations use rates of $1 just to get the EVM figures, so they could use it for schedule management.
Works quite well too, if an organization's culture doesn't include project accounting.
Jerry,
I thought of a silly mnemonic to help remember our preferred "order of business" of the Triple Constraint.
Triple Sequential Constraint = Technical + Schedule + Cost
They are both TSC. Hey, silly mnemonics are the best mnemonics.
/Garry
Post a Comment
Links to this post:
Create a Link
<< Return to PMThink! Project Management Gateway
101 Project Management Uses for Mind Mapping Software
A Little Project Management Anarchy Never Hurt Anyone
AEC Project Management Software: Prolog Upgrade ...
Agile Project Management Software APM: Distributed Visibility ...
Agile Project Management vs. Winging It
Agile Project Management; What's It All About?
Another Great Project Management Framework
Art of Project Management Webcast ...
Art of Project Management: Soft Skills ...
Backed Into a Project Management Corner?
Best Practice - An Online Project Management Framework --
Best Practice Project Management Framework
Branded Project Management Methodology: Service Differentiator
Categorizing Project Management Lessons Learned; Usability is Key
Collaborative Project Management Solution: Distributed Mobile Workforce
Confucius on Project Management
Critical Chain Project Management (CCPM) - The Goldratt advantage
Critical Chain Project Management (CCPM); The Betamax or DVD of Project Management?
Customer Driven Project Management
Earned Value Gone Wild; Exploring New Frontiers in Project Management
5 Tips to becoming a Great Project Manager
Are Your Project Managers Leaders?
Are Your Project Managers Slowed Down by Bureaucracy? Consider Adding a Project Administrator
Be a Project Manager, Not a Project Reporter; Learn the Subject Matter
Can't Retain Your Project Managers?; Here's why
IT Project Managers Seek Business Mentoring
ITProject Manager Alternatives to PMP ...
Management UpSkilling: Project Manager Event ...
PMP eLearning Alliance Drives Project Manager Development
Presentation Skills for Project Managers
Project Manager Development: Business of Innovation
Project Manager Remembers: Good Ol' Project Days When a Project Was a Project ...
Project Manager Salary Report
Project Manager: New PM Discussion ...
Project Manager: Strategic Team Leader: What Are Your Skills?
Project Managers Are Too Soft; Says Neal Whitten
Project Managers Can Influence Without Authority
Project Managers Must be PR Experts
Project Managers Shouldn't Be Afraid to Ask Questions
Project Managers: Stakeholder Expectations Discussion ...
Project Managers: Staying Positive
Project Task Manager Tool for Lotus Notes
Student Project Managers: Shell STEP
Systems Thinking for Project Managers
The Project Manager's Ethical Dilemma
For Well-Rounded IT Project Management - Learn ITIL and PRINCE2
IT Service Transformation Through ITIL Service Catalogs ...
ITIL Certification BTO Software ...
ITIL Helpdesk Transformation: Services Model
ITIL IT Management Processes ...
ITIL IT Service Management Differentiators
ITIL Market Assessment: Podcast
ITIL Microsoft Operations Framework Assessment ...
ITIL Process Approach: Federated CMDB ...
ITIL Process: Run IT Like Business ...
ITIL Project: Cultural Implications ...
ITIL Projects: Avoid Pitfalls ...
ITIL Technology Standard Framework ...
ITIL: IT Service Catalog: Alignment Focal Point ...
Microsoft ITIL Sans CMDB ...
Process Models: ITIL ITGovernance ...
Ready or Not; Here comes ITIL
Siebel CRM ITIL Ready: Helpdesk Capabilities ...
Art of Project Management: Soft Skills ...
Management UpSkilling: Project Manager Event ...
PMForum Announces Project Management Soft Skills Survey
Presentation Skills for Project Managers
Project Management IT Skills Critical, Survey Says ...
Project Management Soft Skills; Communications, Conflict Management, Ethics, and More
Project Manager: Strategic Team Leader: What Are Your Skills?
CA Niku ITGovernance Growth Engine?
Centralized IT Governance: Enterprise Architecture Modeling Tool
COBIT Course: IT Governance Controls Framework ...
Discussion on Distributed IT: Governance ...
Does Architecture Visualization Enable ITGovernance?
EPM Software IT Governance Market Growth ...
From CIO Magazine - A Cry for Full-Cyle Governance
Governance Alignment: Project Portfolio Management (PPM)
Governance Software: OMB A123 Compliance
IT Governance Common Themes ...
IT Governance Integrated Application Development: Software Solution
IT Governance Repeatable Processes ...
IT Governance Road Map ...
IT Governance Role: Architecture
IT Governance Solution: Maturity Acceleration ...
IT Governance Transformation: New York State CIO
IT Governance: Application Services Flexibility or Efficiency?
IT Governance: Board-Level Visibility ...
IT Governance: Board of Directors ...
IT Governance: SAP ESA Strategy
IT Governance: Services Transformation ...
IT Governance: Service Portfolio Management Applications ...
IT Governance: Shift Investment to Business Value Opportunities
IT Governance: The Board ...
IT Governance: Value and Cost Measurement ...
IT Governance; Where the Value of IT is Hiding
IT Savvy: Governance Best Practices: Peter Weill
Leadership and IT Governance
Microsoft IT Governance Woes ...
Process Governance Tool Upcoming ...
Process Models: ITIL ITGovernance ...
Project Management and Governance
ProjectManagement ITGovernanceSoftware Linux Capable ...
SOA and IT Governance ...
SOA Governance: Best Practice Strategies Webinar ...
SOA IT Governance
Software Supports ITGovernance CorporateGovernance