There is little doubt that the most important technological economic and social development of the past decade is the emergence of a global computer-based communication network. This network has been growing at an explosive rate, affecting - directly or indirectly - ever more aspects of the daily lives of the people on this planet. A general trend is that the information network becomes ever more global, more encompassing, more tightly linked to the individuals and groups that use it, and more intelligent in the way it supports them. The web doesn't just passively provide information, it now also actively alerts and guides people to the best options for them personally.
A social organism is like an individual organism in these essential traits: that it grows; that while growing it becomes more complex; that while becoming more complex, it's parts acquire increasing mutual dependence; that its life is immense in length compared with the lives of its component units; that in both cases there is increasing integration accompanied by increasing heterogeneity.
It is intuitively attractive to see humanity together with its shared knowledge stores and communication channels as an intelligent, organism-like system. Many thinkers have therefore developed a conception of such a "global brain."
Herbert, Spencer. “Principles of sociology, (ed by Stanislav Andreski) (MacMillan, London 1969) Bukharin N.I: “Historical Materialism” – a System of Sociology, International Publishers, 1925