What is the main challenge addressed by the two-point resection technique?

The two-point resection technique is primarily used to determine an observer's location by taking bearings to two known reference points. One of the main challenges it addresses is the lack of linear features that can provide clear navigation points. In terrain where linear features, such as roads or rivers, are not present, it can become difficult to ascertain one's precise position. By utilizing the bearings from two known points, the two-point resection allows the observer to triangulate their position even in featureless areas. This technique is particularly vital in wilderness navigation or in environments where landmarks are sparse, thereby overcoming the challenge posed by the absence of distinct linear features.