Yes true, but it's a curved stick to increase the areodynamics and stability in flight. Most of the original boomerangs were in fact non returning. As people got lazier ........
sort of my point... at what stage did a stick... picked up off the ground or from a tree, but nonetheless curved to increase the areodynamics and stability in flight... become a boomerang so that it can be established that the oldest one is 20,000 years old and from poland...?