The boomerang was not invented in Australia [1]. Woomeras don&#x27;t allow you to throw a spear 800m (200m at most). These were not invented in Australia either [2]. Both are really ancient technologies.<p>As for different cultures sharing the same stories is no more surprising than people in England and China sharing similar stories. All pre-agricultural people have somewhat similar lives so we should expect they have similar stories and myths. Occam&#x27;s razor should rule here.<p>1. <a href="https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;Boomerang" rel="nofollow">https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;Boomerang</a><p>2. <a href="http:&#x2F;&#x2F;www.donsmaps.com&#x2F;atlatl.html" rel="nofollow">http:&#x2F;&#x2F;www.donsmaps.com&#x2F;atlatl.html</a>