Tag Archives: selection criteria

World Modeler Has Me Rethinking Trade Studies

Although I am not trained as a scientist or an engineer, I did spend over 20 years working with engineers and (yes, Virginia) rocket scientists. I also may not be a professional scientist, but I’m a pretty good amateur one, and I like to think that being around all that knowledge and brain power bestowed on me at least a patina of engineer/scientist. I do know I am loathe to make decisions without a great deal of information and as much knowledge as I can locate about the consequences of my decisions.

One of the methods we used to make engineering design decisions is called a trade study, which is  short for trade-off study. It’s essentially a very simple concept, whereby you develop the desired outcomes, e.g. features and capabilities of a system,  schedules and cost structures, break them down into measurable parts, and compare various ways to achieve those outcomes. The process itself is reasonably simple, but the details can become staggeringly complex and frequently overwhelming.

Selection Criteria

Expertise System Trade Study Selection Criteria

As I learn more and more about Decision Science and its derivatives, I look for examples and analogies from previous experience that I can revisit with newfound knowledge and capability and, perhaps, understand a little more clearly or completely than I did back then. I am convinced Decision Science, which embraces the concepts of Decision Engineering and Decision Intelligence, as well as the use of Decision Modeling to pull it all together, is a powerful tool that too few people know about.

One of the things that occurs to me, and I want to throw this out for your consideration, has to do with the remarkable software tool Quantellia has created, called World Modeler. It seems to  me it is to trade studies what AutoCAD is to hand-drawn blueprints. It is so rich in modeling functionality, it just makes every other tool I’ve worked with seem flat, unimaginative, and terribly cumbersome in terms of what we know we’re facing and how we see problems in today’s environment.

Just after the turn of the century (that would be 2001) I conducted a trade study for a software tool, some of the requirements of which were that it would run on our intranet and  was designed to both locate expertise and facilitate the exchange, use, and capture of knowledge in a form that would remain useable for some time to come. In short, one kind of knowledge management system that was being sought after back then.

The trade study I conducted looked at three products and rated them over about a dozen criteria we were interested in. There was no formal weighting and it was a fairly simple, straight-forward comparison of capabilities. A simple effort based on what we knew at the time and the very palty list of vendors who were providing the kind of service we wanted. In fact, as you can see in the accompanying graphic, there were only three . . . and one of them (Primus) was actually — if memory serves — an internal service of Boeing’s developed specifically for airplane mechanics to share information on their service and repair activities worldwide.

With World Modeler, we would have been able to model so much more than just these paltry selection criteria. We could have included in our decision the aggregate likely impact of things we assumed would happen, thereby surfacing possible misconceptions that some had. We could have included connections to IT, HR, and Communications, thereby giving us a clearer picture of the likely impact on the enterprise of implementing the system.

Frankly, in retrospect — and based on the fact that its use steadily declined after my retirement — I’m still not certain it was a good decision, though I had lots of reasons to believe so back then. So, getting back to my point, I think World Modeler is an incredibly powerful tool for an organization to measure the value of many of its decisions before making them. It’s also useful, in my opinion, in a wide array of situations and scenarios. I intend on addressing many of them as time goes by and I become more versed in its capabilities and more comfortable with my understanding of its value to various organizations and situations. You should check it out.


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