A question on the main site by the title of "Has it been mathematically proven that antivirus can't detect all viruses?" seems to have gotten some activity even before being posted. According to the timeline it was posted at around 2019-01-23 01:51:09Z, however the timeline also said a comment was posted at around 2018-03-17 17:17:28Z, observe it was posted in 2019 and the comment was posted in 2018.
How is this possible?