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If I remember right, that was something that was going to evolve as time went on.
Where is Mr Cutts these days anyway? Will he ever return?
FYI, I originally referenced the drop in Wikipedia in this thread. [webmasterworld.com...]
However, there are some important things to note about this change. Observing the type of site and page that is ahead of Wikipedia, and how much of Google's knowledge Graph now appears instead of Wikipedia's entry.
What are you currently seeing?
the type of site and page that is ahead of Wikipedia
Usually the people at Wikipedia don't bother to ask you before they scrape your content.
"I found your website [redacted] very informative, while unusually I found the Wikipedia entry for [redacted] to be quite useless - perhaps worse than useless. Would you object to me borrowing liberally from your site in re-writing the Wikipedia entry, in the hope of it being more useful?"
Wikipedia is not an authority on anything (except plagiarism).
Google has taken on a vendetta against Wikipedia and manually demoted it. What other rational conclusion is there?
By displaying information in the KG, Google siphons away some user activity from Wikipedia which leads to a weakening in their rankings.
On the other hand, the people who are being siphoned away are the drive-by searchers who want quick answers. This should result in better user-engagement numbers for Wikipedia.