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How does the structure of social networks affect the way fads catch on and companies solve problems? Columbia University network scientist Duncan Watts says that this young field is on the path to answers.

If you spring for optional pollution-control devices at your overseas plant, have you violated your duty to maximize shareholder value? Here's a framework that can help clarify this and other ethical dilemmas.

A decade of research on how and why teams learn--and what happens when they do--suggests that more isn't always better.

Americans are outraged at the greediness of Wall Street analysts, dot-com entrepreneurs and, most of all, chief executive officers. How could Tyco's Dennis Kozlowski use company funds to throw his wife a million-dollar birthday bash on an Italian island? How could Enron's Ken Lay sell thousands of shares of his company's once high-flying stock just before it crashed, leaving employees with nothing? Even America's most popular domestic guru, Martha Stewart, is suspected of having her hand in the cookie jar. To some extent, our outrage may be justified, writes HBR senior editor Diane Coutu. And yet, it's easy to forget that just a couple years ago these same people were lauded as heroes. It could easily be argued that it was public indulgence in corporate money lust that largely created the mess we're now in. It's time to take a hard look at greed, both in its general form and in its peculiarly American incarnation, says Coutu. If Federal Reserve Board Chairman Alan Greenspan was correct in telling Congress that "infectious greed" contaminated U.S. business, then we need to try to understand its causes--and how the average American may have contributed to it. Why did so many of us fall prey to greed? Can we be sure it won't happen again?

Even at the prototype stage, experts were saying the technology was obsolete. Yet, in the face of tepid consumer response, the company stubbornly kept increasing production capacity and developing new models. By the time it was finally killed, the initiative had cost the company an astounding $580 million and had tied up resources for 14 years. The product was RCA's SelectaVision videodisc recorder, and its story is hardly unique. Companies make similar mistakes--if on a somewhat smaller scale--all the time. But why? No one comes to work saying, "I'm going to pursue a project that will waste my company millions of dollars." Quite the opposite. They come to work full of excitement about a project they believe in. And that, surprisingly, can be the root of the trouble--a fervent belief in the inevitability of a project's ultimate success. Starting, naturally enough, with a project's champion, this faith can spread throughout the organization, leading everyone to believe collectively in the product's viability and to view any signs of impending doom merely as temporary setbacks. This phenomenon is documented here in two chillingly detailed case studies, one involving Essilor, the world's largest maker of corrective lenses for eyeglasses, and the other involving Lafarge, the largest producer of building materials. By counterexample, they point the way toward avoiding such morasses: assembling project teams not entirely composed of like-minded people and putting in place--and sticking to--well-defined review processes.

There's an unsung hero in your organization. It's the person who's bringing in new ideas from the outside about how to manage better. This is the manager who, for instance, first uttered the phrase "Balanced Scorecard" in your hallways, or "real options," or "intellectual capital." Managerial innovation is an increasingly important source of competitive advantage--especially given the speed with which product innovations are copied--but it doesn't happen automatically. It takes a certain kind of person to welcome new management ideas and usher them into an organization. The authors recently studied 100 such people to find out how they translate new ideas into action in their organizations. "Idea practitioners," as the authors call them, begin by scouting for ideas. All of them are avid readers of management literature and enthusiastic participants in business conferences; many are friendly with business gurus. Once they've identified an idea that seems to hold promise, they tailor it to fit their organizations' specific needs. Next, they actively sell the idea--to senior executives, to the rank and file, to middle managers. And finally, they get the ball rolling by participating in small-scale experiments. But when those take off, they get out of the way and let others execute. In this article, the authors identify the characteristics of idea practitioners and offer strategies for managing them wisely.

Most experienced negotiators are comfortable working out the terms of an economic contract--they bargain for the best price, haggle over equity splits, and finesse detailed exit clauses. Yet these same seasoned professionals spend so much time ironing out the letter of the deal that they often pay little attention to the spirit of the deal--the social contract. And that can lead to major problems, say the authors, because even though the parties agree to the same terms on paper, they may have very different expectations about how to meet them. Because the parties have failed to have a true meeting of the minds, they sign a deal that is likely to fall apart. To avoid such a disastrous outcome, negotiators should explicitly discuss the details of their social contract before inking the deal. For instance, what is the real nature, extent, and duration of the agreement? And in practice, how will we make decisions, handle unforeseen events, communicate with one another, and resolve disputes? The authors also highlight risk factors that can lead to misunderstandings and expose common misperceptions about the social contract.

If your company operates in a developing country, AIDS is your business. Although Africa has received the most attention, AIDS is also spreading swiftly in other parts of the world. Why should executives be concerned about AIDS? Because it is destroying the twin rationales of globalization strategy--cheap labor and fast-growing markets--in countries where people are heavily affected by the epidemic. Fortunately, investments in programs that prevent infection and provide treatment for employees who have HIV/AIDS are profitable for many businesses--that is, they lead to savings that outweigh the programs' costs. Due to the long latency period between HIV infection and the onset of AIDS symptoms, a company is not likely to see any of the costs of HIV/AIDS until five to ten years after an employee is infected. But executives can calculate the present value of epidemic-related costs by using the discount rate to weigh each cost according to its expected timing. That allows companies to think about expenses on HIV/AIDS prevention and treatment programs as investments rather than merely as costs. Fighting AIDS not only helps those infected; it also makes good business sense.

Researchers have established that trust is critical to organizational effectiveness. Being trustworthy yourself, however, does not guarantee that you are capable of building trust in an organization. That takes old-fashioned managerial virtues like consistency, clear communication, and a willingness to tackle awkward questions. It also requires a good defense: You must protect trust from its enemies. Any act of bad management erodes trust. Among the most common enemies of trust are inconsistent messages from top management, inconsistent standards, a willingness to tolerate incompetence or bad behavior, dishonest feedback, a failure to trust others to do good work, a tendency to ignore painful or politically charged situations, consistent corporate underperformance, and rumors. Fending off these enemies must be at the top of every chief executive's agenda. But even with constant vigilance, an organization and its leaders will sometimes lose people's trust. During a crisis, managers should enlist the help of an objective third party.

When customers lack the expertise to judge a company's offerings, they naturally turn detective, scrutinizing people, facilities, and processes for evidence of quality. The Mayo Clinic understands this and carefully manages that evidence to convey a simple, consistent message: The needs of the patient come first. From the way it hires and trains employees to the way it designs its facilities and approaches its care, the Mayo Clinic provides patients and their families concrete evidence of its strengths and values--an approach that has allowed it to build what is arguably the most powerful brand in health care. Marketing professors Leonard Berry and Neeli Bendapudi conducted a five-month study of evidence management at the Mayo Clinic. Their experiences led them to identify best practices applicable to just about any company, in particular those that sell intangible or technically complex products. Essentially, the authors say, companies need to determine what story they want to tell, then ensure that their employees and facilities consistently show customers evidence of that story. At Mayo, the evidence falls into three categories: people, collaboration, and tangibles. The way in which Mayo manages evidence to communicate its message is an example to be followed.

Budgeting, as most corporations practice it, should be abolished. Most other building blocks are in place, but companies continue to restrict themselves by relying on inflexible budget processes and the command-and-control culture that budgeting entails. A number of companies have rejected the foregone conclusions embedded in budgets, and they've given up the self-interested wrangling over what the data indicate. In the absence of budgets, alternative goals and measures--some financial, such as cost-to-income ratios, and some nonfinancial, such as time to market--move to the foreground. Companies that have rejected budgets require employees to measure themselves against the performance of competitors and against internal peer groups. Because employees don't know whether they've succeeded until they can look back on the results of a given period, they must use every ounce of energy to ensure that they beat the competition. A key feature of many companies that have rejected budgets is the use of rolling forecasts, which are created every few months and typically cover five to eight quarters. Because the forecasts are regularly revised, they allow companies to adapt continuously to market conditions. The forecasting practices of two such companies, both based in Sweden, are examined in detail: the bank Svenska Handelsbanken and the wholesaler Ahlsell.

In the uproar surrounding the accounting scandals and the current crisis of confidence in American business, no one has discussed the role of strategy. But deficiencies in strategic thinking arguably have contributed to the current mess. Kaplan and Norton's balanced scorecard framework exemplifies current thinking because it is widely respected; yet, it is prey to the same deficiencies. The alternative strategic map proposed here rises above these deficiencies, translating into a kind of dashboard that serves both the formulation and execution of strategy.

The realities of putting tactics to work confound people on the corporate firing line every day. Today's tumultuous marketplace and growing business complexities don't help. And frontline managers and employees are the ones facing many of these challenges while trying to make top management dreams a reality. Attention must focus on the critical, yet often neglected, issue of effective tactical implementation, including many of the misconceptions and factors that contribute to its failure or success. Based on an ongoing research program on marketing implementation challenges, five key principles of tactical implementation are highlighted here, followed by eight recommendations to help managers cope with it--recommendations that apply to all aspects of business.

For decades, marketing channel management has been widely written and talked about but never connected with any "real world" business position. What's more, the many articles and textbooks on the topic seldom provide any hint as to who is supposed to be doing all these functions. At last, based on a national study and a systematic review of the literature to find the most likely suspect, we have identified the erstwhile unknown channel manager. It is now up to top management to provide the selection criteria, training, rewards, and respect for this newly recognized position, because it is central to corporate success.

There's a lot more to Six Sigma than its usefulness as a cost-cutting tool. Properly developed and implemented, it can be a powerful and motivating tool for managing an organization. Which is why managers must ensure that Six Sigma is seen as a strategy for achieving business objectives, rather than simply a cost-saving initiative. This noted expert describes what Six Sigma is and is not, how it should be used.

Transparency and trust may be the ideal attributes of the well-governed corporation, but they also play a critical role in organizational behaviour, specifically in determining whether or not an organization's culture will facilitate - or impede - innovation. Just how do some managers and organizations prevent the formation of a culture that supports innovation? And, what can they do to change their behaviour? These authors have some key suggestions.

Behind most downsizing announcements is a viewpoint that sees employees as costs to be cut. Another viewpoint, one that is rarely expressed, sees employees as assets to be developed. These viewpoints are important, not just because they may influence an executive's decision to downsize, but because they usually influence how employees see themselves - and perform. As this author points out, it's almost a difference between assets and liabilities.

In the uncivil workplace, us and them or we and they are distinctions that divide and alienate. In the civil workplace, there are no such elites nor is there a perception that some, executives, for example, have special privileges. Rather, there are programs and policies that promote inclusion and that offer everyone an equal opportunity for personal and professional growth. In the end, civility reigns.

To become flexible, a decided asset in today's global environment of business, a company's infrastructure needs to be like Velcro, cohesive and workable when in place, but capable of being easily re-arranged when circumstances and strategy call for it. But developing a Velcro-like infrastructure requires formidable mastery of the basics. This noted management expert has some helpful advice for executives.

Most of the talk about better corporate governance has focused on the independence of directors and the separation of the CEO and chair. Not so, argue these authors, who point out that the most important factor is board process - how boards work and reach the decisions they do. Improving process will not only improve board governance but will prove that there really is a link between a board of directors and a firm's financial performance.