Ginny 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.
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 (though the thought has been attributed to many others as well):
It's not what we don't know that hurts; it's what we know that ain't so.
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Related articles
More articles on Emotions at Work:
- Irrational Self-Interest
- When we try to influence others, especially large groups or entire companies, we sometimes create packages
of incentives and disincentives that are intended to affect behavior. These strategies usually assume
that people make choices on rational grounds. Is this assumption valid?
- Ethical Influence: I
- Influencing others can be difficult. Even more difficult is defining a set of approaches to influencing
that almost all of us consider ethical. Here's a framework that makes a good starting point.
- Good Change, Bad Change: II
- When we distinguish good change from bad, we often get it wrong: we favor things that would harm us,
and shun things that would help. When we do get it wrong, we're sometimes misled by social factors.
- The Problem of Work Life Balance
- When we consider the problem of work life balance, we're at a disadvantage from the start. The term
itself is part of the problem.
- Human Limitations and Meeting Agendas
- Recent research has discovered a class of human limitations that constrain our ability to exert self-control
and to make wise decisions. Accounting for these effects when we construct agendas can make meetings
more productive and save us from ourselves.
See also Emotions at Work and Emotions at Work for more related articles.
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