By Nature, we are all survivors, driven by the desire to live rather than die, fired up by fear whenever our lives are threatened. However, in purely physical terms, we are poorly equipped to stand up either to the environment or to our natural enemies. way back down our evolutionary line, this weakness became an enormous advantage, forcing the ape-creatures from which we developed to use their brains to overcome adversaries stronger than themselves. The more these early humans used brain rather than brawn, the more advantage they achieved over their natural dexterity developed.
We are descended from the ones that continued to think, experiment and persevere and who adapted to change, thus survivors, all we require in order to translate our day-to-day survival techniques into unfamiliar environments is some additional knowledge and a few practical skills.