Megaprojects and Risk: A Conversation
with Bent Flyvbjerg
Renia Ehrenfeucht
Bent Flyvbjerg is professor of planning at the Department of Development and Planning at
Aalborg University, Denmark. He was twice a Visiting Fulbright Scholar at UCLA. His most
recent books are Megaprojects and Risk: An Anatomy of Ambition (Cambridge University
Press 2003), Making Social Science Matter (Cambridge University Press 2001) and Rationality
and Power: Democracy in Practice (The University of Chicago Press 1998). He works as an
advisor on questions of megaprojects and risk.
As megaprojects have become ubiquitous, their real benefits and costs have come under increased scrutiny. We
interviewed Bent Flyvbjerg, who has extensively studied megaproject development. Flyvbjerg has found systematic problems in the development process: by intentionally misrepresenting information and deliberately
disregarding risks, proponents instigate projects that result in fewer benefits and higher costs than promised.
Ehrenfeucht: To begin, what is a megaproject?
Flyvbjerg: A megaproject is a very big project looked at in the context of where it is being planned or built.
What is very big? In general, I would say anything above half a billion dollars is a megaproject. If you are
talking about a city like New York City, you might need something bigger. A town in the Midwest would
consider something much smaller a megaproject. You cannot define a megaproject independent of the context in which the specific project is being planned or built.
Ehrenfeucht: Why might we be interested in megaprojects? What is different now?
Flyvbjerg: I think there are two reasons. More and larger projects of this type are being built. And they have
larger and larger impacts.
The question is why is this happening? One reason is that technologically it is becoming possible to build
bigger projects. So there is a technological driver. Second, megaprojects are politically attractive because they are
tangible and monumental. That’s a political driver. Third, large projects have always presented an opportunity
to various groups to make large sums of money. For megaprojects these sums are mega-large. This is an economic driver.
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Finally, there’s an increase in wealth in many countries
around the globe. Before you would mainly see
megaprojects in Europe and North America. Now
other geographical areas are getting into a position
where they can pay for this type of project. That’s
another economic driver and it means that
megaprojects are now also being built in substantial
numbers in South America, in China, in Southeast
Asia and in Russia.
Ehrenfeucht: You have looked at transportation
megaprojects, in particular, from which you and your
co-authors wrote Megaprojects and Risk. How would
you characterize megaproject development?
Flyvbjerg: Because of their empirical track record, I
have come to think of megaprojects as disasterprone. It may sound a bit dramatic and I would like
to stress at the outset that not all projects turn out to
be disasters. But just considering cost overruns, nine
out of ten projects end up with problems. Ninety
percent! Add to this revenue shortfalls and problems
with environmental and social impacts and the picture quickly turns quite dismal.
Why would so many projects end up with problems? Because a “disaster gene” has been built into
them. It goes like this. When a megaproject is proposed and appraised, promoters typically overestimate the benefits that will derive from the project
and they similarly underestimate the costs. This creates enormous risks with projects. Underestimated
costs come back as a boomerang to haunt projects as
cost overruns. Overestimates of benefits similarly
backfire as benefit shortfalls. In this way, you get a
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doubly negative effect. On the one hand, cost overruns, on the other hand, benefit shortfalls. In short,
risks to the second degree.
I should stress that when I say risks, I mean a wide
range of different types of risks. These can be financial risks. They can be environmental and social risks.
They can also be safety risks. The safety risks are particularly important for projects where human safety is
at stake, like space exploration or the rebuilding of
Iraq, if we look at these as megaprojects. The same
holds for health and environmental projects in a
more indirect fashion.
So the disaster gene is the underestimation of costs
and overestimation of benefits that is often built
into projects at an early stage, when projects are first
proposed. The disaster happens when the gene kicks
in during implementation and cost underestimation
comes back as overruns and benefit overestimation
as shortfalls. The consequences can be dire, as we
have seen in both the space program and Iraq. In
other megaprojects, fortunately, the disaster does not
directly place human lives at risk but is instead limited to financial disaster. But the basic pattern is the
same. Ask Bostonians about the Big Dig, or the
French and the British about the Channel tunnel.
Ehrenfeucht: Why do you think this is occurring?
Flyvbjerg: We have done research on this, which is
reported in the Journal of the American Planning Association. There are two main reasons. One is psychological, related to over-optimism, or optimism bias,
which has been documented as characteristic of hu-
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man decision making. Humans generally have a more
rosy view of the future than is warranted by experience. Psychologists call it a cognitive bias. This is an
explanation you often see in the literature. Psychologist Daniel Kahneman of Princeton University won
the 2002 Nobel Prize in economics developing such
explanations. They are certainly valid and may in part
explain the megaproject disaster gene.
represent the costs, benefits and risks of projects in
order to get them built, for instance because different
groups of promoters are competing against each
other for limited federal funds. Therefore, psychological explanations do not fully account for the disastrous outcome of many megaprojects—political
explanations are needed as well to account for strategic misrepresentation.
Even so, psychological explanations are insufficient
in my analysis. They are too optimistic in themselves.
They look at human beings as well-intentioned, but
faulty, and that’s nice. But it is not always like that
with megaprojects. Working as a researcher and adviser, I come across instances again and again of
what is called strategic misrepresentation. “Strategic
misrepresentation” is the Orwellian euphemism
planners and planning researchers like to use for deception and lying. This is not cognitive bias; it is calculated. So you also have politicians and planners
involved in strategically misrepresenting projects in
order to get the go-ahead to build them. A project
brings immediate benefit to many people, including
engineers and architects who develop the projects,
planners who plan them, land owners, land developers, construction companies, lawyers, politicians who
cut the ribbon. Stakeholders may have an interest in
letting a project go ahead, even if it was completely
useless, which projects rarely are. But even if a project
was completely useless once built, many people
would stand to benefit from just building it.
Ehrenfeucht: Why aren’t politicians more wary of
megaprojects if they have cost overruns and benefit
shortfalls?
I’m not saying that promoters care only about building projects, but there are strong incentives to mis-
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Flyvbjerg: We have to remember that the period
from the initial idea stage to when the project is put
into operation is very long. Ten years is not uncommon. You also see fifteen, twenty years. Decision
makers may be tempted to say “Well, when they finally cut the ribbon and the problems possibly start
occurring, I won’t be in office anymore.” In fact I
just read an article by Steven Weinberg in the New
York Review of Books in which he interprets President
Bush’s New Vision for Space Exploration—which is
a megaproject if there ever was one—in just this
manner.
The problem here is a lack of accountability arising
from the long time periods involved. The costs of a
possible disaster do not fall on the people who
made the decision. The costs and criticism fall on
other people who say, “We didn’t make the decisions. We’re just here now to administer this project
so don’t criticize us.” There’s a diffusion of responsibility.
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Ehrenfeucht: Could we turn to the question of
risk? The book is titled Megaprojects and Risk. Why
was risk such an important theme?
Flyvbjerg: This is a crucial question. Our research
shows that planners and decision makers involved in
megaprojects tend to think in a deterministic way
and not in a stochastic fashion. They think according
to what has been called the EGAP principle: Everything Goes According to Plan. Again, this may be
something very human. But it turns out that most
things related to megaprojects are stochastic. Most
things happen only with a certain probability. When
thinking in a deterministic fashion, you end up disregarding risk. This is a major problem with
megaprojects.
Ehrenfeucht: What would be different if we were
thinking about risk?
Flyvbjerg: Thinking in terms of risk promotes critical and reflexive thinking. It also inserts a healthy
dose of empirical matter-of-factness into the planning of megaprojects. You cannot understand risk
without understanding probability, and probability
is an empirical concept.
For instance, if you think in terms of risk, simple
cost-benefit thinking with one figure for costs and
one for benefits, and a single cost-benefit ratio, is
immediately undermined. Anybody thinking in a
risk frame of mind would not accept one figure for a
project. Each figure has a certain likelihood and you
have to ask what is the likelihood that it will be another figure. This is what risk analysis is about, in-
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quiring, for instance, what is the likelihood that the
costs of the Big Dig or of rebuilding Iraq are going
to be 50%, 100%, or 150% higher than what the cost
engineers came up with? Or if someone says, we
believe the Los Angeles Metro will have umpteen
thousand passengers a day on the Redline, a person
thinking in terms of risk would be critical and ask
what is the likelihood we’re going to have that number instead of a number half that size? Thinking in
terms of risk means thinking in terms of alternatives, and alternatives tend to problematize deterministic thinking.
Ehrenfeucht: What drives the deterministic thinking? The people who immediately benefit?
Flyvbjerg: My point of departure in thinking about
risk is as a power researcher. I’m interested in
power—political power, power in planning, organizational power, institutional power. When I see a
seemingly dated way of thinking, like thinking deterministically about megaprojects, I relate it to the issue of power. “Cui bono?” as the Romans asked,
“Who benefits?” Who has an interest in the situation looking the way it does? When a phenomenon
appears strange—and it is strange to have highly
educated people like engineers, economists and planners treat megaprojects like this—the question I ask
is, are these people uninformed or are they acting in a
calculated manner? I know they are not uninformed
because I’m trained as a planner myself and I train
planners. That leaves calculation. Research confirms
this.
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Behind calculation, what are the interests? Who is
interested in not dealing with risk? Well, people interested in making a project look good on paper in
order to have it approved and built would be interested in ignoring risk—financial, environmental, social, safety—because risk has a price, as we all know
from insurance. So ignoring risk is ignoring a part of
the total costs, and our research shows this to be a
substantial part.
Here it is also important to remember that most
megaprojects are subject to the logic of sunk costs
and the point of no return. It is difficult to drop a
project once it has reached a certain stage because the
costs sunk in the project are now too high and nonretrievable. If you have a billion-dollar project, once
you have put in a hundred million, and you find that
the project will now cost 1.5 billion dollars, you rarely
stop. This is why partly finished bridges are so rare.
Seasoned promoters know this when they plan their
projects. The consequences of ignoring risks do not
become clear until it is too late, so it is possible to
ignore them and still get the project built.
Ehrenfeucht: In Megaprojects and Risk, why did you
look at transportation infrastructure projects?
Flyvbjerg: First, the book grew out of a research
project where transportation was our focus. We were
interested in understanding and improving planning
and management in large transportation infrastructure projects. In addition, we wanted to have a sharp
focus because we wanted to dig quite deep, deeper
than had been done before, regarding the economics
and politics of planning these projects.
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At the same time, we compared transportation
projects with other project types, including power
plants, water projects, dams, oil and gas extraction
projects, IT systems, aerospace projects and even
weapons systems. We looked at several hundred
other projects based on other people’s studies, and
we found that the patterns we were uncovering for
transportation infrastructure projects were generally
found in the other areas as well. This led us to conclude that the pattern we uncovered is quite general.
Later research has further confirmed this conclusion.
Ehrenfeucht: What is the role of planners in this
process?
Flyvbjerg: As planners, planning students and planning researchers, we like to think of planners as
people doing the right thing, just as other professions like to think positively of themselves. But this
is too simple for a researcher looking critically at
megaprojects. Therefore I would like to distinguish
between planners who are interested in doing things
right—having a proper planning process, producing
information that is not misinformation, working for
the public interest as their code of ethics say they
should do—and the situation where planners actively take part in the rent-seeking behavior that is
typical in many megaprojects. Rent-seeking behavior
is actions aimed at making a profit—economic or
political—for a certain stakeholder group, regardless
of the overall benefits and costs of a project. In the
first instance, planners may make a genuine contribution to proactively improving the planning and decision-making process for megaprojects because, as a
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profession, they clearly have the knowledge and tools
to do so.
In the second situation, planners are basically part of
the problem, not the solution. By participating in
rent-seeking behavior they contribute to megaproject
disasters, or to making megaprojects more risky than
they need to be, instead of preventing disasters and
reducing risks. I am unhappy to say this situation is
quite common. For a democratically minded person,
here the question becomes how to force checks and
balances on planners to make them accountable, that
will punish them when they do the things with
megaprojects they are not supposed to do according
to their code of ethics and according to the basic
rules of democratic governance, and that will reward
them when they do the right thing. You asked me
about planners, but this goes for all groups involved
in a project. And it is not different from other areas
in society subject to rent-seeking behavior and the
misuse of power. In democratic societies we seek to
eliminate or reduce such behavior by measures of
accountability.
Ehrenfeucht: How could we improve accountability
in megaproject development?
Flyvbjerg: There are two basic types of accountability. One is related to the public sector, the other to
the private sector. Let’s take the public sector first.
Here the main means of accountability is transparency. But there is little transparency in megaprojects,
so we need to make these projects more transparent.
This is a paradox in planning. The smaller a planning
project is, the more transparency, the more public
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participation, etc. The larger the planning project, the
less transparency and participation. Civil society is
often kept out of the megaproject planning process,
more so than for other planning. That is a problem
to do something about and this may happen in a
number of ways.
First, all information on megaprojects should be
subject to independent peer review. As we talked
about earlier, you cannot trust the information produced by promoters because it is often biased to
make their project look good on paper with large
benefits and low costs. Independent peer review
could be carried out by national audit offices, ministries of finance or by independent panels of experts,
as was the case for environmental impacts of the
Øresund and Great Belt Bridges in Scandinavia. Independent peer reviews are crucial for credibility and
public debate.
Second, it is important to systematically compare
forecasts for a given project to forecasts and outcomes for other similar projects that have been completed. This is what we call reference class forecasting.
Central to any megaproject is a cost-benefit analysis.
Central to that analysis are forecasts of costs and
benefits. Each of these should be made subject to
reference class forecasting.
Third, peer reviews and forecasts should be made
available to the public. It is a problem today that
information is closed and you cannot get access to it,
sometimes even if you are working on the project or
for the government agency which promotes it. I
know this from personal experience. If you’re on the
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outside, it is virtually impossible, even if you attempt to use the freedom of information act.
Fourth, public hearings, citizens’ juries, scientific conferences and review panels should be used much
more widely to generate transparency. This has been
done in Denmark and Sweden with great success
regarding environmental impacts of megaprojects.
So we do not see only negative experiences with
megaprojects. We see success stories too. From one
project out of ten we may learn positively how to do
things better.
Finally, forecasters and planners should come from
organizations that will be penalized if the forecasts
and plans go wrong. This will create an incentive to
get forecasts right. This incentive is often not there
today or, even worse, the incentive works in the opposite direction: you are rewarded for making rosy
forecasts and plans.
Ehrenfeucht: And what about private sector accountability?
Flyvbjerg: In the private sector, in business, the
main means of accountability is not transparency but
competition. If you know how to compete you win,
if not you lose out. And without competition accountability suffers, for instance in the case of monopolies. This is all standard fare, but what does it
mean for megaprojects?
Well, if you get the private sector to invest in
megaprojects, it will be private money that is placed
at risk, not taxpayers’ money. One reason many public projects disregard risk is that they pass it on to the
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taxpayer and then act as if the risk did not exist. If
you bring in private capital—we recommend at least
a third, also for subsidized projects—the people
who own that capital will critically scrutinize what
planners and managers do with the money. The normal mechanisms of the financial markets will come
into play and they are typically better at enforcing financial accountability than mechanisms found in the
public sector.
Moreover, even where private accountability fails to
contain the disaster gene we talked about earlier, as
has happened for the privately owned Channel tunnel, there is the additional advantage that losses are
limited to those who have decided to invest in the
project. They pay if the disaster gene kicks in, not the
taxpayer.
Ehrenfeucht: Do planners have a personal and professional responsibility? Do ethics matter?
Flyvbjerg: Definitely. Megaprojects offer a wonderful opportunity to study planners’ ethics and what
elsewhere I have called the dark side of planning.
Our studies show that in many projects planners do
not live up to their codes of ethics. Some of the
checks and balances we already talked about would
help remedy this situation. But there is also the question of professional ethics in relation to our professional organizations, and to what extent these organizations take their codes of ethics seriously by
actually enforcing them.
If you look at the American Institute of Certified
Planners’ Code of Ethics and Professional Conduct,
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planners must strive to provide full, clear and accurate information on planning issues to citizens and
governmental decision-makers. Planners must also
serve the public interest. The British Royal Town
Planning Institute has a similar code of conduct. If
such codes are to have practical import they must be
enforced by rewarding planners who follow the
codes and punishing those who don’t. This would
help improve megaproject planning and decisionmaking. As I said, today the incentive structure is the
exact opposite for many megaprojects: planners are
often rewarded for being unethical.
Our research shows, for instance, that for seventy
years transportation planners have consistently and
predictably got their forecasts wrong by the same
large margin. It is difficult to imagine that medical
doctors would be allowed to make similar “errors”
decade after decade in producing prognoses for a
certain disease in the face of evidence that the prognoses were consistently and systematically biased.
That would be malpractice. So it is in planning, in
my analysis.
But as the American Planning Association states up
front on its homepage: “Ethical planning isn’t always easy.” But what’s the alternative, unethical planning? It is clear that we must resist this as a profession. It is equally clear that currently we are not doing
enough when it comes to megaprojects.
Ehrenfeucht: How are non-professionals, civil society, currently involved in megaprojects? And what
could be better?
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Flyvbjerg: Studies show that civil society generally,
and especially the poor and disadvantaged, are not
sufficiently involved in the planning process. Poor
people are often hurt by megaprojects, I’m sorry to
say. To add insult to injury, they are sometimes even
actively excluded. This is the opposite of transparency and participation. Patrick McCully’s and
Arundhati Roy’s studies of dams document the
problem for the planning of very large water and
energy projects. A number of case studies of smaller,
but still large, urban infrastructure and services
projects in Pakistan, Bangladesh, India and Ethiopia
show similar results: social impact analysis cannot be
trusted, the poor are not considered, hundreds of
thousands of livelihoods are disrupted or lost with
no immediate prospect for reemployment.
What to do about that? Again we have to think in
terms of power. Technical solutions are not the
prime concern in such situations, even if they may
matter as they relate to power, for instance, as
counter-proposals to the proposals of power. We
have to do what people have always done when dissatisfied with the misuse of power: organize and
fight back with the means available to us.
As mentioned in the introduction to Megaprojects and
Risk, we wrote the book with the hope that activists
and local communities affected by megaproject development would find useful insights in the book, for
example, regarding the deceptions and power games
they are likely to meet and possible counter measures. We are happy to see that the book is now actually being used like this. For instance, I recently re-
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ceived a note from a volunteer activist in Pakistan
asking for a copy of the book. He explained he
wanted to use the book in a campaign against the
building of big dams in Pakistan. These dams are
leading to more deprivation and more poverty for
the average citizens, and more opportunities for corruption and embezzlement by the public officials
and elite.
These are his words, not mine, but I think they are a
pretty good description of the problems in a development setting. They also point a way forward, however, in organizing. And I am delighted that there is a
role in this, even if it’s admittedly a small and marginal one, for something as unfashionable as an academic book.
What the book has to offer to those confronted with
a megaproject is collective knowledge from a large
number of projects. Most people who are confronted by a megaproject have this experience only
once in a lifetime, perhaps twice, decades apart. This
means there is little opportunity to gain useful experience before it’s too late. The people who build
megaprojects, on the other hand, do so all the time.
They have lots of experience. This asymmetry in experience and knowledge all too often translates into
an asymmetrical power relationship and places civil
society in a loser’s role.
So, if you are confronting a megaproject, it is important to know the experience from other megaprojects
and about their pattern. It is not a simple thing, for
instance, for a local resident to stand up to a
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megaproject cost engineer who says the costs would
be 500 million dollars, and say “Studies have found
that in nine out of ten cases such budgets are underestimated, and most likely the costs will be 750 million. What do you say? Would the project still be
viable with this cost?”
Megaprojects are going to continue so it is important
that stakeholders, including the stakeholders who
might be hurt, stand up and stand up early. People
often do not start protesting until construction begins on the site, unfortunately, and then it is too late.
Ehrenfeucht: Finally, could we talk a little bit about
rebuilding Iraq? You wrote a piece about it.
Flyvbjerg: Yes, when the war began and the plans
for rebuilding Iraq were being developed, I took a
look at the projects involved in the reconstruction
effort. They were projects of the kind that typically
have large cost overruns in any setting. If you add to
this that the reconstruction effort would be pressed
for time, would be very complex, would take place in
a developing nation just ravaged by war, and would
be a possible target for terrorist attacks, it was clear to
me that the megaproject of rebuilding Iraq from the
outset was burdened with the disaster gene we talked
about earlier. Human life would be at risk, costs were
likely to skyrocket, the planned benefits would be
hard to realize. Later developments have shown this
analysis to be correct. The disaster gene has kicked in
and the world is holding its breath, waiting to see
what happens next in Iraq, and outside.
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Moreover, as with other megaprojects, there are
groups who stand to benefit no matter what the
outcome is—those companies, like Halliburton,
which have been in a position to secure contracts,
and the consultants who helped them prepare the
bids. Huge profits are being made and these groups
may laugh all the way along their well-trodden path
to the bank. Even at this level of mundane detail,
the reconstruction of Iraq follows the pattern found
in other megaprojects.
Ehrenfeucht: You suggest that the outcomes
would not be better under the UN. Do you have
some thoughts on how a process could occur that
would benefit those most affected?
Flyvbjerg: I’m not an expert on international relations, so I have to be careful with what I say. But
clearly the UN is not known for its efficiency in ad-
ministrative matters, in fact, quite the opposite. Also,
even within the UN, senior officials admit that the
organization does not have the capacity or experience
to administer a country the size of Iraq. This is why
I’m skeptical of the UN, even though the UN
should undoubtedly play a role. Perhaps four or five
major countries, assisted by the UN, would be a way
forward. What I would like to see is an attempt to
learn from past experience and here I think Germany
and Japan after World War II would be good models to look at.
As a planner and planning researcher, I’m sorry to
see that my analysis of the reconstruction effort was
so quickly proven depressingly correct. As a citizen in
an increasingly globalized world, I hope things will
not end up in a complete mess, in a new Vietnam.
Fortunately, that’s not where we are at present. And
it’s important we don’t get there.
RENIA EHRENFEUCHT (
[email protected]) is a doctoral candidate in urban planning at UCLA.
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