Mark Granovetter, Stanford sociologist, in 1973 in his seminal essay "The Strength of Weak Ties," made the point that these weak ties that are a part of our networks, these strangers, are actually more effective at diffusing information to us than are our strong ties, the people closest to us.
Der Stanford-Soziologe Mark Granovetter wies 1973 in seinem wegweisenden Aufsatz »Die Stärke schwacher Bindungen« nach, dass uns die schwachen Bindungen, die Fremden in unseren Netzwerken, effektiver informieren als unsere starken Bindungen, der uns nahe stehenden Menschen.