July 11, 2001	Volume 1, Issue 28
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The Fallacy of the False Cause

by Rick Brenner

Although we sometimes make decisions with incomplete information, we do the best we can, given what we know. Sometimes, we make wrong decisions not because we have incomplete information, but because we make mistakes in how we reason about the information we do have.

inny was getting pretty steamed. "We tried code inspections back in Release 5, and you know what happened then. Everything slowed down, we got nothing done, everyone got into fights, and Morgan left the group. If we have to do inspections, you can count me out." Ginny's argument, in essence, was that since some unpleasant events happened shortly after inspections began, the code inspections caused them.

Arguments based on
the Fallacy of the False Cause
lead organizations
to make costly errorsAlthough her argument is convincing to many, it doesn't prove her case. It's an example of a rhetorical fallacy called post hoc ergo propter hoc — Latin for after this, therefore because of this. Ginny argues that since the unpleasant events followed the adoption of code inspections, the code inspections caused the problems, and therefore all code inspections, of any kind whatever, are bad.

A more convincing argument would exclude other possible causes. For example, were the inspections run badly? Were people inadequately trained? Were inspections introduced when people were too busy to learn how to do inspections?

The Post Hoc fallacy is a special case of a more general type of fallacy — the fallacy of the false cause. In Post Hoc, the apparent causal connection relates to the timing of the two events. But connections can also be unrelated to timing:

All of the projects Gerhard has managed in the past few years have been late and over budget. Since people now believe that Gerhard was the cause of the overruns, he can no longer get assignments as a project lead. Nobody seems to remember that each of Gerhard's project sponsors had either reduced his budget or expanded requirements so many times that no project manager would have had much of a chance to perform well.

Gerhard's management skill was the most obvious factor common to the failed projects, but it wasn't the cause. In this case, faulty reasoning damages a career and deprives the company of a skilled manager.

How can you spot this kind of error in the heat of debate? The fallacy of the false cause might be lurking if the argument states that:

Since A was present when B occurred, then A was the cause. Or Since A preceded B, A caused B.

To respond to arguments that use this fallacy, use examples in which A was present, but B wasn't. Your debate partner might not be convinced, but it's your best shot.

Educate your colleagues about the Fallacy of the False Cause. When we understand how much it can cost, and when we understand how to avoid it, we can save much pain and frustration. Perhaps Will Rogers said it best:

It's not what we don't know that hurts; it's what we know that ain't so.

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More articles on Emotions at Work:

You Remind Me of Helen Hunt

At a dinner party I attended recently, Kris said to Suzanne, "You remind me of Helen Hunt." I looked at Suzanne, and sure enough, she did look like Helen Hunt. Later, I noticed that I was seeing Suzanne a little differently. These are the effects of hat hanging. At work, it can damage careers and even businesses.

Are You Taking on the Full Load?

Taking on the full load is what we do when we feel fully responsible for either the success or the failure of some organizational activity. Instead of asking for help, we take extreme measures to execute responsibilities that might not even be ours.

When It Really Counts, Be Positive

When we express our ideas, we can usually choose between a positive construction and a negative one. We can advocate for one path, or against another. Even though these choices have nearly identical literal meanings, positive constructions are safer in tense situations.

Your Wishing Wand

Wishing — for ourselves, for others, or for all — helps us focus on what we really want. When we know what we really want, we're ready to make the little moves that make it happen. Here's a little user's guide for your wishing wand.

Are You Micromanaging Yourself?

Feeling distrusted and undervalued, we often attribute the problem to the behavior of others — to the micromanager who might be mistreating us. We tend not to examine our own contributions to the difficulty. Are you micromanaging yourself?

See also Emotions at Work, Critical Thinking and Rhetorical Fallacies for more related articles.

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Public seminars

Person-to-Person Communication for Project Managers

When we talk, listen, send or read emails, read or write memos, or when we leave or listen to voice mail messages, we're communicating person-to-person. And whenever we communicate person-to-person, we risk being misunderstood, offending others, feeling hurt, and being confused. There are so many ways for things to go wrong that we could never learn how to fix all the problems. A more effective approach avoids problems altogether, or at least minimizes their occurrence. In this very interactive program you'll learn a model of inter-personal communications that can help you stay out of the ditch. In those moments of intense involvement, when we're most likely to slip, you'll have a new tool to use to keep things constructive. Read more about this program. Here are some upcoming dates for this program:

• Des Moines, IA: February 16, Breakfast Meeting, Central Iowa Chapter of The Project Management Institute.
   
• Des Moines, IA: February 16, Lunch Meeting, Central Iowa Chapter of The Project Management Institute.
   
• Houston, Texas: May 8, Monthly Meeting, Houston Chapter of the Project Management Institute.
   
• Houston, Texas: May 9, Monthly Meeting, Houston Chapter of the Project Management Institute.
   

The Race to the South Pole: The Power of Agile Development

On 14 December 1911, four men led by Roald Amundsen reached the South Pole. Thirty-five days later, Robert F. Scott and four others followed. Amundsen had won the race to the pole. Amundsen's party returned to base on 26 January 1912. Scott's party perished. As historical drama, why this happened is interesting enough. Lessons abound. Among the more important lessons are those that demonstrate the power of the agile approach to project management and product development. Read more about this program. Here's an upcoming date for this program:

• Download to
  your calendarSt. George Banquet Hall, Kitchener, Ontario: March 6, Dinner Meeting, Canada's Technology Triangle Chapter of the Project Management Institute. Register now.
   

Human-Centered Risk Management

Most of us can assess technological risks, but risks related to human behavior tend to resist our best efforts. This session provides a framework for evaluating risks related to the behavior of individuals, teams, organizations and people generally. Human-centered risk differs from technological or market risk, because objective evaluation requires acknowledging personal and organizational limitations and failures. Since some of those limitations and failures might apply to the people assessing the risks, or to their superiors, there's a tendency to deny them or to explain them away. Our approach examines capability, organization, context, risk mitigation, and workplace politics. It has tools for guiding the assessment and management of human-centered risk, and we show how to extend these tools to suit your situation. You'll learn how to identify sources of risk in human behavior; recognize systemic and individual barriers to acknowledging risk; assess the effects of organizational turbulence; determine the risk associated with inappropriate internal risk transfer; estimate the effects of team dysfunction, toxic conflict and turnover; and measure the impact of workplace politics. Read more about this program. Here's an upcoming date for this program:

• Download to
  your calendarMITRE, in Bedford, Massachusetts: March 20, Monthly Meeting, Boston SPIN. Register now.
   

The Race to the South Pole: Ten Lessons for Project Managers

On 14 December 1911, four men led by Roald Amundsen reached the South Pole. Thirty-five days later, Robert F. Scott and four others followed. Amundsen had won the race to the pole. Amundsen's party returned to base on 26 January 1912. Scott's party perished. As historical drama, why this happened is interesting enough, but to project managers, the story is fascinating. Lessons abound. Read more about this program. Here's an upcoming date for this program:

• Columbia, Missouri: May 17, Full-Day Workshop, Mid Missouri Chapter of the Project Management Institute.
   

Project Management in Fluid Environments

Most people now work in environments that can best be characterized as fluid, because they're subject to continual change. We never know what's coming next. In such environments, managing — teams, projects, groups, departments, or the enterprise — often entails moving from surprise to surprise while somehow staying almost on track. It's a nerve-wracking existence. This program provides numerous tools that help project managers who work in fluid environments. Read more about this program. Here's an upcoming date for this program:

• Columbia, Missouri: May 17, Monthly Meeting, Mid Missouri Chapter of the Project Management Institute.
   

The Politics of Meetings for People Who Hate Politics

There's a lot more to running an effective meeting than having the right room, the right equipment, and the right people. With meetings, the whole really is more than the sum of its parts. How the parts interact with each other and with external elements is as important as the parts themselves. And those interactions are the essence of politics for meetings. This program explores techniques for leading meetings that are based on understanding political interactions, and using that knowledge effectively to meet organizational goals. Read more about this program. Here's an upcoming date for this program:

• Rochester, New York: May 24, Professional Development Day, Rochester Chapter of the Project Management Institute.