Board Thread:Naruto Discussions/@comment-30881771-20170713233733/@comment-32569165-20170714113953

So in that case infinite tsukuyomi shouldn't work on everybody and neither Itachi nor Shisui can put the average person under a genjutsu. Hagoromo shared chakra with his followers, who then did the same with others and so Ninja appeared. I am pretty sure that not everyone in the world has chakra(most certainly not cats, who also happened to be placed under the genjutsu), so there should be a lot of normal people who can resist it. This didn't seem to be the case. I don't know if this is another plot hole, but if it's not, then it simply means that you don't need to have chakra in order to be place under genjutsu.