And to see why, consider two scenarios Let's imagine that you are really good at making arrowheads, but you're hopeless at making the wooden shafts with the flight feathers attached.
２つのシナリオを考えてみます 想像して下さい　あなたは 矢じり作りの名手ですが 矢の篦の制作や 矢羽根の取り付けはど素人です