Did Australian aborigines really lay the foundations, 10,000 years ago, for powered flight?

There is today a mad desire to pretend that primitive cultures in Africa and Australia achieved great wonders in the past, before white people arrived. The BBC is spreading the story now that Australian natives paved the way for aeroplanes. :Boomerang_from_the_Obłazowa_Cave#/media/File:01985_Boomerang_from_the_Obłazowa_Cave,_ca_30_000_BC,_Obłazowa_Cave,