There are people who claim that anti-plagiarism systems violate their rights. After all, some students believe that systems that require their work to be submitted to a plagiarism detection site before being graded are a violation of their right to submit whatever they want. And some sites like turnitin.com take digital fingerprints of work that was run through its software and some people feel like they're basically stealing their work and making money off of it. Plagiarism allows people to do work of equal quality while using less effort, but more effort from others, thereby undermining the works used and produced. The works used are undermined since their rarity is after all less, why choose only a certain book among tens of hundreds when you can take the book of another author who is probably more popular, after all it is the same kind so one is more likely to get a different book. Since the plagiarizing author will be punished for plagiarism and the fact that he was punished for plagiarism will be made public, exposing the fact that he plagiarized, thus making people suspicious of his works. Anti-plagiarism systems prevent people from improving past works in order to create better works. Some of the most famous works come from works of the past, the Lord of the Rings films come from the Lord of the Rings books, and the Hobbit films come from the Book of the Hobbit. And some of the most important inventions came from the past, like the first car came from the work of the steam engine maker and Europeans used Asian paper for printing..