Board Thread:Wiki Discussions/@comment-3238846-20140422105553/@comment-24851495-20140422194411

yin is described as creating form from nothingness. so madara's sage art: yin release lightening dispatch is sage enhanced lightening created from nothingness, which is why he just kinda generates lightening from his hands. yang is giving life to the form created from yin release. such as shadow techniques, genjutsu (creating form from nothing, cuz shadows aren't actually physical, and neither are illusions)