However, many workers called it a river of intrigue and scheming. They described making quiet pacts with colleagues to bury the same person at once, or to praise one another lavishly. Many others, along with Ms. Willet, described feeling sabotaged by negative comments from unidentified colleagues with whom they could not argue. In some cases, the criticism was copied directly into their performance reviews — a move that Amy Michaels, the former Kindle manager, said that colleagues called "the full paste.