How-to "How to Win Friends and Influence People", written by Dale Carnegie in 1936. A similar concept can be seen in many of the "[topic] For Dummies" series of tutorials and also in many other introductory surveys entitled with the suffix "101" (based on academic numberings of entry-level courses). It is common practice to write the phrase as "HOWTO" in the open-source community. This is consistent with the traditional naming scheme for technical documentation, such as FAQ and README. Another possible reason is that this makes it easier to find a how-to in search engines like Google as searching with the
Three degrees of influence Three degrees of influence Three Degrees of Influence is a theory in the realm of social networks, proposed by Nicholas A. Christakis and James H. Fowler in 2007. It has since been explored by scientists in numerous disciplines using diverse statistical, psychological, sociological, and biological approaches. Christakis and Fowler found that social networks have great influence on individuals' behavior. But social influence does not end with the people to whom a person is directly tied. We influence our friends, who in their turn influence their friends, and so our actions can influence people we have never met, to whom we