Dzidziso yeCartesian yakarurama here?
Izvi kufanana nemibvunzo mizhinji youzivi hazvigoni kuoneswa nechivimbo chakafanana chatinowana kupfurikidza nokucherechedza mukati menzira yesayenzi.  Ikoku kunokurukurwa zvikuru, zvisinei vamwe vangapikisa kuti kunogovera kuparadzana kwakajeka kwendangariro nenyika. Vamwe vanotaura somuenzaniso kuti ndangariro inotsamira nokuda kwedonzo pabatano isingaputsiki munyika yakapoteredza nomuviri.