Brandon9000 wrote:
I think I just did demonstrate that this kind of exploration is inherently beneficial.
precisely; you said, "this kind of exploration". so which kind is that? if you say, the beneficial kind, then obviously it's beneficial. also, when you talk about prehistoric hunter-gatherers "exploring" you're stretching the meaning of the term a bit, since hunter-gatherers are inherently nomadic. to hunt, you have to follow the prey. that's how humans moved from Asia across ice to the Americas, following the prey. exploration generally refers to journeys to unknown places from an established base of operations, quite different from permanent migration of nomads.
there have been expeditions in my sense that were not beneficial, such as attempts to find the fountain of youth or golden cities. and even your first example, Columbus' expedition, would have been a failure but for the fact that there were civilizations in the Americas who mined the precious metals that the Spaniards could loot, since his original goal was to find a route to China or India. or what about Eric the Red's expedition to Greenland? it's hard to argue that the expedition was beneficial, since all the settlers from Iceland eventually perished.