Think about it.

So lets say that you are a ninja, (like I am) and you are running (I like to fly) around these windmills. All of a sudden you lose your sword and you don't know what to do. Well, let me tell you what I would do being such a good ninja teacher. First thing you would think to do is jump up and tear off a blade from the wind mill and use that. You could, but the correct answer, you use your hands, your a freaking ninja.