It is worth pointing out that controlling and maintaining fire is distinct from knowledge of techniques to build fire ex nihilo. There are still groups that lac

It is worth pointing out that controlling and maintaining fire is distinct from knowledge of techniques to build fire ex nihilo. There are still groups that lack that technology. http://en.m.wikipedia.org/wiki/Sentinelese_people http://en.m.wikipedia.org/wiki/Sentinelese_people