2. Why does crowdsourcing require a large, "undefined community" to work? Why not a small, defined community of passionate people who you know and have worked with before or with whom you are already friends (think Facebook communities which are smaller, and defined)? As the article states, crowds are generally wise when 1. There are many decision makers, who make their decision independent of one and another 2. Participants come from diverse backgrounds 3. Where there is a mechanism that can aggregate opinions to produce a single outcome 4. The participants do not talk with one another or influence each other prior to making a decision
A large, undefined community fulfills these criteria. The participants of these communities most likely are from diverse backgrounds (#2), don’t influence each other or talk with each other prior to decision making (#4) and make their decisions independent from one and another (#1). Defined communities of passionate people who know each other from work or who are friends which each other don’t fulfill the above mentioned criteria. They probably have a similar background (work, interests,…) and might not make their decisions independent from each other, as they probably talk about it, discuss the ‘issue’ and most likely even influence each