A troubling new way to evade plagiarism detection software. (And how to tell if it’s been used.)

Recently, at the end of a tutorial, a student asked Ann Rogerson a question she'd never heard before: Was it okay to use paraphrasing tools to write up assignments? Rogerson, a senior lecturer in the faculty of business at the University of Wollongong in Australia, was stumped -- she'd never heard of these tools before. It turns…