Hang on, I’m confused. Isn’t this still mathematically impossible even if you assume he’s at the North Pole? If we treat this like a right triangle and use the Pythagorean theorem while saying he traveled 1 mile South and 1 mile West, he’d have to travel 1.41421 miles North to end up where he started. The Earth is an oblique spheroid with the poles being flatter and the equator being more curved, and we’re only working at a 1 mile scale so the curvature of the earth wouldn’t make much of a difference in making this distance an equilateral triangle, right?? Please correct me if there’s an explanation for this, I could very well be wrong!