Never put a time limit on your doomsday predictions.
This rookie error has been the undoing of charlatans, cultists and false prophets through the ages, from Martin of Tours, who predicted that the world would end by 400, to Harold Camping, who claimed it would happen on Sept. 6, 1994.
The latest poor saps to join the oops club are the authorities in charge of Montana’s Glacier National Park. For years they’ve been warning on their visitor signs that their main attraction, the glaciers, would be “gone by 2020.” Instead, it’s those misleading signs that have had to go, because 2020 has now arrived and those pesky glaciers, all 29 of them, remain stubbornly unmelted by climate change.
You can tell that the National Park Service is secretly embarrassed because it has been trying to replace the signs by stealth. It began doing so last year but was rumbled by a visitor, Roger Roots, who reported the skullduggery at the website Watts Up With That?