As early as the 1960s, psychologist Stanley Milgram explored the closeness of interpersonal relationships through his "small world experiment." He discovered that it only takes a few people to connect two strangers, which led to the famous theory of "six degrees of separation." This finding sparked in-depth research into social networks and raised an intriguing question: given that the world is so closely connected, it is time to ask, can ideas or products spread as efficiently and effectively as viruses do amongst people?