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 began to take note of "how strange epidemics were", saying epidemiologists have a "strikingly different way of looking at the world". The term "tipping point" comes from the moment in an epidemic when the virus reaches critical mass and begins to spread at a much higher rate. This claim that the idea came from epidemiology has been critically challenged. Gladwell's theories of crime were heavily influenced by the "broken windows theory" of policing, and Gladwell is credited for packaging and popularizing the theory in a way that was implementable in New York City. Gladwell's theoretical implementation bears a striking resemblance