Nine-eleven, of course, changed all that. It showed us the power of a very different kind of imagination. It showed us the power of a group of hateful men who spent several years imagining how to kill as many innocent people as they could. At some point bin Laden and his gang literally must have looked at one another and said, “Imagine if we actually could hit both towers of the World Trade Center at the exact right spot, between the ninety-fourth and ninety-eighth floors. And imagine if each tower were to come crashing down like a house of cards.” Yes, I am sorry to say, some people had that conversation, too. And, as a result, the world that was our oyster seemed to close up like a shell.

There has never been a time in history when the character of human imagination wasn't important, but writing this book tells me that it has never been more important than now, because in a flat world so many of the inputs and tools of collaboration are becoming commodities available to everyone. They are all out there for anyone to grasp. There is one thing, though, that has not and can never be commoditized—and that is imagination.

When we lived in a more centralized, and more vertically organized, world—where states had a near total monopoly of power-individual imagination was a big problem when the leader of a superpower state—a Stalin, a Mao, or a Hitler-became warped. But today, when individuals can easily access all the tools of collaboration and superempower themselves, or their small cells, individuals do not need to control a country to threaten large numbers of other people. The small can act very big today and pose a serious danger to world order-without the instruments of a state.

Therefore, thinking about how we stimulate positive imaginations is of the utmost importance. As Irving Wladawsky-Berger, the IBM computer scientist, put it to me: We need to think more seriously than ever about how we encourage people to focus on productive outcomes that advance and unite civilization-peaceful imaginations that seek to “minimize alienation and celebrate interdependence rather than self-sufficiency, inclusion rather than exclusion,” openness, opportunity, and hope rather than limits, suspicion, and grievance.

Let me try to illustrate this by example. In early 1999, two men started airlines from scratch, just a few weeks apart. Both men had a dream involving airplanes and the savvy to do something about it. One was named David Neeleman. In February 1999, he started JetBlue. He assembled $130 million in venture capital, bought a fleet of Airbus A-320 passenger jets, recruited pilots and signed them to seven-year contracts, and outsourced his reservation system to stay-at-home moms and retirees living around Salt Lake City, Utah, who booked passengers on their home computers.

The other person who started an airline was, as we now know from the 9/11 Commission Report, Osama bin Laden. At a meeting in Kandahar, Afghanistan, in March or April 1999, he accepted a proposal initially drawn up by Khalid Sheikh Mohammed, the Pakistan-born mechanical engineer who was the architect of the 9/11 plot. JetBlue's motto was “Same Altitude. Different Attitude.” Al-Qaeda's motto was “Allahu Akbar,” God is great. Both airlines were designed to fly into New York City-Neeleman's into JFK and bin Laden's into lower Manhattan.

Maybe it was because I read the 9/11 report while on a trip to Silicon Valley that I could not help but notice how much Khalid Sheikh Mohammed spoke and presented himself as just another eager engineer-entrepreneur, with his degree from North Carolina Agricultural and Technical State University, pitching his ideas to Osama bin Laden, who comes off as just another wealthy venture capitalist. But Mohammed, alas, was looking for adventure capital. As the 9/11 Commission Report put it, “No one exemplifies the model of the terrorist entrepreneur more clearly than Khalid Sheikh Mohammed (KSM), the principal architect of the 9/11 attacks... Highly educated and equally comfortable in a government office or a terrorist safe house, KSM applied his imagination, technical aptitude and managerial skills to hatching and planning an extraordinary array of terrorist schemes. These ideas included conventional car bombing, political assassination, aircraft bombing, hijacking, reservoir poisoning, and, ultimately, the use of aircraft as missiles guided by suicide operatives... KSM presents himself as an entrepreneur seeking venture capital and people... Bin Laden summoned KSM to Kandahar in March or April 1999 to tell him that al-Qaeda would support his proposal. The plot was now referred to within al-Qaeda as the 'planes operation.'”

From his corporate headquarters in Afghanistan, bin Laden proved to be a very deft supply chain manager. He assembled a virtual company just for this project-exactly like any global conglomerate would do in the flat world-finding just the right specialist for each task. He outsourced the overall design and blueprint for 9/11 to KSM and overall financial management to KSM's nephew, Ali Abdul Aziz Ali, who coordinated the dispersal of funds to the hijackers through wire transfers, cash, traveler's checks, and credit and debit cards from overseas bank accounts. Bin Laden recruited from the al-Qaeda roster just the right muscle guys from Asir Province, in Saudi Arabia, just the right pilots from Europe, just the right team leader from Hamburg, and just the right support staff from Pakistan. He outsourced the pilot training to flight schools in America. Bin Laden, who knew he needed only to “lease” the Boeing 757s, 767s, A32Os, and possibly 747s for his operation, raised the necessary capital for training pilots on all these different aircraft from a syndicate of pro-al-Qaeda Islamic charities and other Muslim adventure capitalists ready to fund anti-American operations. In the case of 9/11, the total budget was around $400,000. Once the team was assembled, bin Laden focused on his own core competency-overall leadership and ideological inspiration of his suicide supply chain, with assistance from his deputies Mohammed Atef and Ayman Zawahiri.

You can get the full flavor of the bin Laden supply chain, and what an aggressive adopter of new technology al-Qaeda was, by reading just one entry from the December 2001 U.S. District Court for the Eastern District of Virginia's official indictment of Zacarias Moussaoui, the so-called nineteenth hijacker from 9/11. It reported the following: “In or about June 1999, in an interview with an Arabic-language television station, Osama bin Laden issued a... threat indicating that all American males should be killed.” It then points out that throughout the year 2000, all of the hijackers, including Moussaoui, began either attending or inquiring about flight school courses in America: “On or about September 29, 2000, Zacarias Moussaoui contacted Airman Flight School in Norman, Oklahoma, using an e-mail account he set up on September 6 with an Internet service provider in Malaysia. In or about October 2000, Zacarias Moussaoui received letters from Infocus Tech, a Malaysian company, stating that Moussaoui was appointed Infocus Tech's marketing consultant in the United States, the United Kingdom and Europe, and that he would receive, among other things, an allowance of $2,500 per month... On or about December 11, 2000, Mohammed Atta purchased flight deck videos for the Boeing 767 Model 300ER and the Airbus A320 Model 200 from the Ohio Pilot Store... In or about June 2001, in Norman, Oklahoma, Zacarias Moussaoui made inquiries about starting a cropdusting company... On or about August 16, 2001, Zacarias Moussaoui, possessed, among other things: two knives; a pair of binoculars; flight manuals for the Boeing 747 Model 400; a flight simulator computer program; fighting gloves and shin guards; a piece of paper referring to a handheld Global Positioning System receiver and a camcorder; software that could be used to review pilot procedures for the Boeing 747 Model 400; letters indicating that Moussaoui is a marketing consultant in the United States for Infocus Tech; a computer disk containing information related to the aerial application of pesticides; and a hand-held aviation radio.”