Imo it is not possible for google to detect properly spun content, it is not worth computing power it requires. They can do this using ngrams for example, but it is uses a lot of queries. And for example article spinner I coded beats this algo, so google cant detect that the content is spun. Manual spinning is also good but it takes more than 30 minutes per article.
I put the keyword in Google search, Open the first top 5 websites copy the content, manually edit those content add or remove good lines and convert 5 articles into 1 good article, then copy to spinner chief and rewrite manually. Add some good infographics made by me or stock images and embed my hand made video . my niche is, "how-to" "tutorials" so I can manually make some video. So can I rank this type of contents? With some pbn or web2.0
Aaron Sustar is a well-known name in the online marketing field. Back in 2007 he started his own successful online business and hasn’t looked back since. He describes himself as an entrepreneur, programmer and in love with life, he considers himself more of a “science” guy than a “marketing” guy. Aaron Sustar passionately works on improving Spin Rewriter, a software he developed.