"What are its mechanisms for passing information? For reaching consensus? Where are the possibilities for feedback loops?" I didn't read the book as suggesting

"What are its mechanisms for passing information? For reaching consensus? Where are the possibilities for feedback loops?" I didn't read the book as suggesting this was required. Surowecki champions a diverse set of people with diverse knowledge, consensus is reached when that knowledge combined tells us the crowd's opinion. Feedback loops are not considered. "The Wisdom of Crowds" applies more when people are acting in their own interests than collaborating towards a solution. Perhaps feedback loops are even what throws this system of crowd wisdom off (bubbles?).