Thursday, October 13, 2005

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.

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3 Comments:

At 4:52 PM, Anonymous Garry L. Booker said...

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

 
At 9:40 PM, Blogger Jerry Manas said...

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.

 
At 7:15 AM, Anonymous Garry L. Booker said...

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

 

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