Expert information. It in no way assures that the author of that site or blog is an expert. Some characteristics of the development of an expert have been found to include Mark Twain defined an expert as "an ordinary fellow from another town". Will Rogers described an expert as "A man fifty miles from home with a briefcase." Danish scientist and Nobel laureate Niels Bohr defined an expert as "A person that has made every possible mistake within his or her field." Malcolm Gladwell describes expertise as a matter of practicing the correct way for a total of around 10,000 hours.
Malcolm Gladwell to the "stop-and-frisk" policies of the NYPD. However, in the decade and a half since its publication, "The Tipping Point" and Gladwell have both come under fire for the tenuous link between "broken windows" and New York City's drop in violent crime. During a 2013 interview with BBC journalist Jon Ronson for "The Culture Show", Gladwell admitted that he was "too in love with 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". After "The Tipping Point," Gladwell published "Blink" in 2005. The book