50 blogs all write original content, and all put "original source" attributes on their content. 1 website comes along and copies all of the content from these 5

50 blogs all write original content, and all put "original source" attributes on their content. 1 website comes along and copies all of the content from these 50 websites. Google knows where the original content came from and can rank accordingly. Now, that site which copied the original source content notices dropping down the list so lies and states that they are the original source instead. Google can automatically detect that they are doing this because they have lots of data that exists on lots of other sites which has conflicting "original source" data. Google now de-lists the scraper site, or penalises further. Also, it becomes impossible for scraper sites to say that what they're doing is ok, and is good for users, if all of a sudden they're publishing lies that they are the original source for content which they're not.