The San people of Africa, the Australian Aboriginies and the Native Americans for example might not have had " Science", but boy have they always relied on " anecdotes" passed down the generations for survival. If you failed to learn the anecdotes you were gone very soon, taking your genetics with you. And remember, every single one of us descends from some or other land based people. So we all have that wisdom in us if we would just slow down and use our senses. Science has its place, but we need to balance that with wise observation.