The laws of playgiarism are unwritten, it's a tabou, like incest, it cannot be legalized. The great playgiarizers of all time, Homer, Shakespeare, Rabelais, Diderot, Rimbaud, Proust, Beckett, and Federman have never pretended to do anything else than playgiarizing. Inferior writers deny that they playgiarize because they confuse plagiarism with playgiarism, not the same. The difference is enormous, but no one has ever been able to tell what it is. It cannot be measured in weight or size.
Plagiarism is sad.
It cries, it whines. It always apologizes. Playgiarism on the other hand laughs all the time. It makes fun of what it does while doing it. That's all I can tell you today.