social choice and information distribution networks

Amartya Sen the Nobel Laureate in economics in 1998 dealt with a question around famine that I have within the context of distribution networks of information. What is social choice when it comes to information and ideas? Are Sen's theories applicable to how information flows, and how do individual acts of creation and consumption of information help us arrive to "cogent aggregative judgments"? Here is a commentary on Sen's work by fellow noble laureate Kenneth Arrow, who's impossibility theorem is credited with starting "social choice economics".