What type of exploration has a greater long-term impact on a society:external exploration of the world or internal exploration of human understanding?
Both external and internal exploration serves as a substantial impact upon the world. External exploration benefitted the world just as internal exploration did. And example is, in 1492, Columbus sailed the ocean blue. This external exploration was excellent for the world, because it opened up new trade routes. It also brought back useful information for future exploration and travel. Columbus' expedition proved several theories wrong and right. Such as if the world was flat or not. Internal exploration during the Renaissance, opened new doors in science, writing, and math. This exploration of knowledge served the world greatly. Internal exploration would lead into in the invention of new things which could help in external exploration. This was a win-win situation.