There is in depth information on its workings, on the website itself, in the newsgroups and in the podcast. If the author of the article were to look it would remove any "magic" of its workings. The author apparently has an axe to grind, for whatever reason , having said that , it may be for a very good reason but for transparency sake this should be included in the article. Instead its just a weird ramble about what he thinks of other tools and that he thinks Spinrite is a "scam" without technically explaining why, boiling it down to essentially a technically worded opinion piece.