Sari Horwitz plagiarizes: Washington Post reporter admits to copying from the Arizona Republic. Jack Shafer explains why it matters. - By Jack Shafer - Slate Magazine

Sari Horwitz plagiarizes: Washington Post reporter admits to copying from the Arizona Republic. Jack Shafer explains why it matters. - By Jack Shafer - Slate Magazine: "Washington Post Executive Editor Marcus Brauchli blocked all escape routes that his reporter Sari Horwitz might have mapped when he told Yahoo News reporter Michael Calderone yesterday, 'There are no mitigating circumstances for plagiarism.'"