Board Thread:Naruto Discussions/@comment-4688597-20140903132501/@comment-5014598-20140903215015

Elveonora wrote: But a shadow isn't a tangible thing. A shadow is a reflection of light I believe. In fact if Naara techs were Yang Release, their techniques would use light instead of shadow, since they would give life to light. Shadow on another hand, is just a reflection, an illusion, just like genjutsu, makes sense Yin would be able to control it.

Yeah, no. A shadow is the absence of light, not a reflection. A shadow is caused by an object blocking light from reaching somewhere. By definition, its the absence of light made visible by light being projected around it. A shadow doesn't actually exist. Real world physics can't actually be used to explain what the Nara clan does, and the ability is entirely fictional.