the broken-windows notion". He went on to say that he was "so enamored by the metaphorical simplicity of that idea that I overstated its importance". Blink After The Tipping Point, Gladwell published Blink in 2005. The book explains how the human unconscious interprets events or cues as well as how past experiences can lead people to make informed decisions very rapidly. Gladwell uses examples like the Getty kouros and psychologist John Gottman's research on the likelihood of divorce in married couples. Gladwell's hair was the inspiration for Blink. He stated that once he allowed his hair to get longer, he started to get speeding tickets all the time, an oddity considering that he had never gotten one before and that he started getting pulled out of airport security lines for special attention. In a particular incident, he was apprehended by three police officers while walking in downtown Manhattan because his curly hair matched the profile of a rapist, despite the fact the suspect looked nothing like him otherwise. Gladwell's The Tipping Point (2000) and Blink (2005) were international bestsellers. The Tipping Point sold more than two million copies in the United States. Blink sold equally well. As of November 2008, the two books had sold a combined 4.5 million copies. Outliers Gladwell's third book, Outliers, published in 2008, examines how a person's environment, in conjunction with personal drive and motivation, affects his or her possibility and opportunity for success. Gladwell's original question revolved around lawyers: "We take it for granted that there's this guy in New York who's the corporate lawyer, right? I just was curious: Why is it all the same guy?", referring to the fact that "a surprising number of the most powerful and successful corporate lawyers in New York City have almost the exact same biography". In another example given in the book, Gladwell noticed that people ascribe Bill Gates's success to being "really smart" or "really ambitious". He noted that he knew a lot of people who are really smart and really ambitious, but not worth $60 billion. "It struck me that our understanding of success was really crude—and there was an opportunity to dig down and come up with a better set of explanations." What the Dog Saw Gladwell's fourth book, What the Dog Saw: And Other Adventures, was published in 2009. What the Dog Saw bundles together Gladwell's favourites of his articles from The