It’s not that the Four Corners marker is “about 2.5 miles west of where it should be,” as the Deseret News puts it, it’s that it’s about two and a half miles west of where it should have been. Important distinction. Surveyors were aiming for 37° N 100° W when they placed the first marker in 1868; and modern-day observers with GPS receivers can easily spot the discrepancy. Doesn’t mean the borders are going to be redrawn. There are plenty of surveying errors along the U.S.-Canada border that are now accepted as fact, for example.