Often the 'wisdom of the crowd' yields something like the greatest common denominator, a determination of a general level of knowledge, such as the weight of a cow. In many areas this yields useful insights that help us further than if we had no knowledge at all. Think for example of new insights into the relationship between food and health or transport and the environment. Something is better than nothing. If you have no idea what a cow weighs (for example a UFO lands on earth) then 550 kilos gives you a good estimate of the order of magnitude.
Google also shows that much can be gained from the greatest common denominator. This gives context and relevance to information and thus produces search results that we can do something with. Not necessarily the best outcome.
However, as communication through social media and the use of Google increases, diversity and thus the 'wisdom of the crowd' may be compromised.
Google knows better than anyone that there is more than the lowest common new zealand phone number list denominator. The complicated search algorithm therefore contains various corrections for lack of diversity. The reputation of sources is also taken into account. The experts play an important role in this. Although their position seemed to have been somewhat affected by the hype of the 'wisdom of the crowd', their position is now being restored. It is a matter of asking the right question and using the right helpline. You ask the audience about the popular film actor, but you can also ask your smart uncle who never goes to the movies about the name of that unique wine region.