to my students in beijing, fall 2007: while grading papers today i encountered two more cases of plagiarism. one was sophisticated but serious. the other was so blatant that it was almost unbelievable. that makes a total of three students who have failed my courses because of plagiarism. if i had not warned you and given you the opportunity honestly to correct your essays, there would have been several more. i thank those of you who were honest and showed me what you had copied. plagiarism disturbs m ……