I attended a talk by David Sumpter on “How animal groups make decisions” (hosted by Max Reuter). David is a mathematician working on self-organisation and decision-making based on simple rules. His team looked at behavioral rules that explain, for example, how birds fly together.
My take-away from his talk: Group decision-making may be better than individual decision-making ONLY if each member of the group takes decision indepedently. Indeed, idependence is one of the four elements to form a wise crowd. Alas, I think that social prejudices make it impossible to reach independent decisions in our society. Does this suggest the end of the wisdom of crowds?
Few scribble notes: