Yeah it feels like a logical/semantic confusion, where the author gets to "well actually" the reader. To me "go east" means something more like "travel with a

Yeah it feels like a logical/semantic confusion, where the author gets to "well actually" the reader. To me "go east" means something more like "travel with a velocity vector that is always aligned with east on a compass", not "travel with a velocity vector that is fixed with east from your initial position"