Mm, so what I understand is that Google has duplicate content detection to punish people who do this kind of thing. However! If you have a high-ranking site an

Mm, so what I understand is that Google has duplicate content detection to punish people who do this kind of thing. However! If you have a high-ranking site and you scrape from a low-ranking site, Google might index you first and think the originating site was stealing "your" content! And then there's the fact that it wouldn't be hard to replace words with synonyms, chopping up multiple articles, etc. so that Google probably wouldn't detect it. This is what spammers do.