As explained at length by the moderators themselves, the detection was a lot more multiply-factored than that. They also took into account (for example) massiv

As explained at length by the moderators themselves, the detection was a lot more multiply-factored than that. They also took into account (for example) massive stylistic changes in posting questions, comments, and answers; because people were only using machines to generate the answers. See https://news.ycombinator.com/item?id=36200852 https://news.ycombinator.com/item?id=36200852 .