When handled by an educated person, both the Top and the Ball spin but are capable of behaving in a remarkably different fashion. The Top can become and remain stable, while the Ball can roll or be thrown. The many professional persons misrepresenting the Boomerang over the past centuries probably have never in fact thrown successfully, or tried to understand these flying devices. The modern day effect of this confusion and professional exploitation is the lack of any useful explanation regarding proper Boomerang use or the Boomerang's place in the community and history. To judge the flying ability of an ancient or modern Boomerang is a much more difficult task than to judge the usefulness of an ancient or modern wheel.
Kangaroos are large fast animals.
Hunting Sticks also have to be large and fast to be effective. The complete guide to the most misunderstood flying device in human history. New 2nd edition includes additional information and modern day examples of the physics of HOW and WHY Boomerangs fly.