In group discussions, debates about issues are informal and sometimes fast-moving. They can move so fast that the group's members don't realize that they have reached incorrect conclusions. When this happens, one or more rhetorical fallacies probably played a role — accidentally or intentionally inserted by one of the group's members.
Because of its subtlety, the Fallacy of Composition is a favorite of those who intentionally use rhetorical fallacies. When people use the Fallacy of Composition, they make statements about some parts of a whole (or even every part of a whole), and then conclude something about the whole. To illustrate the use of the fallacy, here's a particularly transparent form, just to give you the idea of how it works:
Since the global economy is in recession, and our jobs are less secure than they once were, everyone should pay off their debts and increase the fraction of their income that they save.
If we were to follow this advice, the recession would quickly become a depression, because economic activity would contract severely. Although the statement is probably true for individuals, the conclusion about the entirety of all individuals is false.
The Fallacy of Composition also occurs in group discussions about managing projects:
We can make up some time and get closer to the original schedule if Tim and Ellen work through the weekend. So it's probably best if everyone works every weekend for the rest of the project.
If we take this approach, people will become fatigued, their work quality will degrade, some will seek reassignment, and the project might never complete.
Here's an example in which an approval board finds two issues in a proposal, and then rejects the entirety on that basis:
We've found serious problems in the proposal. The Localization budget is too low, and the schedule for customer extensions is too aggressive. You need to rethink the whole thing.
The above Because of its subtlety,
the Fallacy of Composition
is a favorite of those
who intentionally use
rhetorical fallaciescomment omits any proof that the two flaws cited are justification for the final recommendation.
And from Glen's performance review:
I'm sorry I couldn't recommend you for a promotion this year. You had some trouble working with Fran, and there were also problems with Leo. You need to learn how to work better with people.
Perhaps the conclusion above is correct, but two difficult relationships are probably not adequate proof. For instance, if both Fran and Leo have problems with everyone, perhaps the problem isn't Glen's. This application of the Fallacy of Composition offers a convenient alternative to justifying decisions made for other reasons.
One important distinction between a Fallacy of Composition and valid inductive reasoning is the nature of the generalization. An inductive argument contains a proof of its generalization; a fallacy of composition merely suggests its generalization. It is the subtlety of this distinction that makes the Fallacy of Composition so difficult to identify in the moment. Top Next Issue
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More articles on Effective Meetings:
- Appreciate Differences
- In group problem solving, diversity of opinion and healthy, reasoned debate ensure that our conclusions
take into account all the difficulties we can anticipate. Lock-step thinking — and limited debate
— expose us to the risk of unanticipated risk.
- An Agenda for Agendas
- Most of us believe that the foundation of a well-run meeting is a well-formed agenda. What makes a "well-formed"
agenda? How can we write and manage agendas to make meetings successful?
- FedEx, Flocks, and Frames of Reference
- Your point of view — or reference frame — affects what you see, and how you experience the
world around you. By choosing a reference frame consciously, you can see things differently, and open
a universe of new choices.
- How to Eliminate Meetings
- Reducing the length and frequency of meetings is the holy grail of organizational science. I've attended
many meetings on this topic, most of which have come to naught. Here are some radical ideas that could
change our lives.
- When the Chair Is a Bully: III
- When the Chair of the meeting is so dominant that attendees withhold comments or slant contributions
to please the Chair, meeting output is at risk of corruption. Because Chairs usually can retaliate against
attendees who aren't "cooperative," this problem is difficult to address. Here's Part III
of our exploration of the problem of bully chairs.
Forthcoming issues of Point Lookout
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- Hard problems need not be big problems. Even when they're small, they can halt progress on any project. Here's Part I of an approach to working on hard problems by breaking them down into smaller steps. Available here and by RSS on June 28.
- And on July 5: Tackling Hard Problems: II
- In this Part II of our look at solving hard problems, we continue developing properties of the solution, and look at how we get from the beginning to the end. Available here and by RSS on July 5.
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- The Power Affect: How We Express Our Personal Power
- Many people who possess real organizational power have a characteristic demeanor. It's the way they project their presence. I call this the power affect. Some people — call them power pretenders — adopt the power affect well before they attain significant organizational power. Unfortunately for their colleagues, and for their organizations, power pretenders can attain organizational power out of proportion to their merit or abilities. Understanding the power affect is therefore important for anyone who aims to attain power, or anyone who works with power pretenders. Read more about this program. Here are some upcoming dates for this program:
- Creating High Performance Virtual Teams
- Many people experience virtual teams as awkward, slow, and sometimes
frustrating. Even when most team members hail from the same nation or culture, and even when they all
speak the same language, geographic dispersion or the presence of employees from multiple enterprises
is often enough to exclude all possibility of high performance. The problem is that we lead, manage,
and support virtual teams in ways that are too much like the way we lead, manage, and support co-located
teams. In this program, Rick Brenner shows you how to change your approach to leading, managing, and
supporting virtual teams to achieve high performance using Simons' Four Spans model of high performance.
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- 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 organizational leaders, business
analysts, project sponsors, and project managers, the story is fascinating. Lessons abound. Read
more about this program. Here's an upcoming date for this program:
- CTCPA, 716 Brook Street,
Rocky Hill, CT 06067: September 20,
Full-day Workshop, Southern New England Chapter of the Project Management Institute. Register now.
- CTCPA, 716 Brook Street, Rocky Hill, CT 06067: September 20, Full-day Workshop, Southern New England Chapter of the Project Management Institute. Register now.