The structure and effect (flying capability) of Yumiya has been developed by trial and error in various parts of the world since the period when the idea of dynamics and parabola (differential and integral calculus) were not created, which led to the development of early machine engineering by producing the machine bow and the catapult.
弓矢の構造や効果（飛翔性）は、力学や放物線（微分・積分）という概念がない頃から世界各地おいて、それらについて試行錯誤されてきた道具であり、初期の機械工学の発展の要因（機械弓、カタパルト）である。