Peter loved his chocolate chip cookies, but he liked this conversation with Trish and Nan even more. Holding his hands over the side of his chair to brush the cookie crumbs off them onto the ground, he added "And his discussion of wishful thinking was really insightful."

In 1997, the Commonwealth of Massachusetts adopted a bill proposed by the third grade class of a school in Somerset, and thereby designated the chocolate chip cookie as the official state cookie of Massachusetts. Photo courtesy Lara Schneider.
Nan broke off a tiny chunk of her cookie, ate it, and sipped her coffee. "Mmmm, I thought so too," she said. "Knowing that we fall into these fallacy traps because of our humanness made me more accepting of it, less guilty."
Trish was puzzled. "Yeah, but how does that help the project?"
"That's just it," said Nan. "Knowing that the fallacies are part of being human makes it easier to acknowledge these errors when we make them."
Peter finished Nan's thought. "And that way we can own up to them faster, maybe even before they do any damage."
Fallacies aren't just false. Because they have a deep connection to what we are as human beings, they'll never go away. Here's Part III of a little catalog of the fallacies of project management. For Part II, see "Nine Project Management Fallacies: II," Point Lookout for December 14, 2005, and for Part IV, see "Nine Project Management Fallacies: IV," Point Lookout for January 11, 2006.
- The Fungibility Fallacy
- The Fungibility Fallacy holds that each person produces one hour of output in one hour, and that we can substitute people for one another. Terms that suggest this fallacy are man-month headcount and FTE.
- Often, only a few people can perform certain tasks. Using the project management tools that distinguish the skills of large numbers of unique individuals takes time and effort, and even then they produce somewhat fictitious results.
- And running "lean and mean" makes the problem worse. If you count the cost of delays and lost market windows due to overloading key people, running a little "fatter and kinder" might actually be more profitable.
- The Linearity Fallacy
- Fallacies have
a deep connection
to what we are
as human beings - This fallacy holds that the human effort required to execute a project scales in proportion to project attributes such as project size or total budget.
- Not only do operating costs per unit of output grow rapidly with project size, but the converse is also true: costs decline unexpectedly slowly as we scale the project down in size. This happens because we have difficulty abandoning control processes as we move down in size. We lose in both directions.
- Project management is an inherently nonlinear activity. The complexity of an effort grows not in proportion to the effort, but combinatorially with the size of the effort, following the growth in the number of possible person-to-person interactions with increasing team size.
These two fallacies both arise because of our hopes and wishes. We long for a world where we can substitute any person for any other; for a world where doubling resources halves the schedule. But longing doesn't make it so. In the next and final installment of this series we'll look at fallacies that arise from failures of critical thinking. First in this series Next in this series Top
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Related articles
More articles on Project Management:
The Weaver's Pathway
- When projects near completion, we sometimes have difficulty letting go. We want what we've made to be
perfect, sometimes beyond the real needs of customers. Comfort with imperfection can help us meet budget
and schedule targets.
Status Risk and Risk Status
- One often-neglected project risk is the risk of inaccurately reported status. That shouldn't be surprising,
because we often fail to report the status of the project's risks, as well. What can we do to better
manage status risk and risk status?
Scope Creep and the Planning Fallacy
- Much is known about scope creep, but it nevertheless occurs with such alarming frequency that in some
organizations, it's a certainty. Perhaps what keeps us from controlling it better is that its causes
can't be addressed with management methodology. Its causes might be, in part, psychological.
How We Waste Time: I
- Time is the one workplace resource that's evenly distributed. Everyone gets exactly the same share,
but some use it more wisely than others. Here's Part I of a little catalog of ways we waste time.
Power Distance and Teams
- One of the attributes of team cultures is something called power distance, which is a measure
of the overall comfort people have with inequality in the distribution of power. Power distance can
determine how well a team performs when executing high-risk projects.
See also Project Management and Critical Thinking at Work for more related articles.
Forthcoming issues of Point Lookout
Coming June 1: Mental Accounting and Technical Debt
- In many organizations, technical debt has resisted efforts to control it. We've made important technical advances, but full control might require applying some results of the behavioral economics community, including a concept they call mental accounting. Available here and by RSS on June 1.
And on June 8: Flexible Queue Management
- In meetings of 5-30 participants, managing the queue of contributors can be challenging. A strict first-in-first-out order can cause confusion and waste of time if important contributions are delayed. Some meetings need more flexible queue management. Available here and by RSS on June 8.
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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.
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Webinar, sponsored by Technobility
Webinar Series. PMI members can earn 1.0 Category 'A' PDU by viewing this program. View this program now.
- A recording of a program presented June 29, 2017, Monthly
Webinar, sponsored by Technobility
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- Bullet Points: Mastery or Madness?
Decis
ion makers in modern organizations commonly demand briefings in the form of bullet points or a series of series of bullet points. But this form of presentation has limited value for complex decisions. We need something more. We actually need to think. Briefers who combine the bullet-point format with a variety of persuasion techniques can mislead decision makers, guiding them into making poor decisions. Read more about this program.
- A recording of a program presented June 24, 2020, Monthly
Webinar, sponsored by Technobility
Webinar Series. PMI members can earn 1.0 Category 'A' PDU by viewing this program. View this program now.
- A recording of a program presented June 24, 2020, Monthly
Webinar, sponsored by Technobility
Webinar Series. PMI members can earn 1.0 Category 'A' PDU by viewing this program. View this program now.
- A recording of a program presented June 24, 2020, Monthly
Webinar, sponsored by Technobility
Webinar Series. PMI members can earn 1.0 Category 'A' PDU by viewing this program. View this program now.
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