'Wisdom of the crowd' is not what it is often made out to be, the greatest common denominator and the fact that the crowd always does it better. Wisdom is also a matter of using expertise wisely, being constantly aware of pitfalls such as collective blindness. Diversity is only one aspect of this.
And Surowiecki shows in his book that there is more than factual information (cognition), but that there can also be a lot of wisdom in coordination and collaboration. The way we live together and relate to each other. That is where communication technology and social media can make an enormous contribution that increases 'wisdom' (except for factual knowledge as the Swiss research showed).
For me, the 'wisdom of the crowd' is above all an inspiration, a metaphor that crowds do new zealand phone number list not have to be only stupid and hysterical. Our greatest challenge as a society is to deal wisely with that 'wisdom of the crowd'. That cannot be captured in a simple calculation, but requires constant reflection, awareness of our pitfalls and thinking. But who said that wisdom was easy?