Originally posted by Naija boy
The times Itachi has done Tsukuyumi, he never did anything as precise as disabling or affecting their nervous system. Who did ITachi paralyse in the real world after usin tsukuyumi? He would have had to do this in order for the idea that he could replicate the effects of Jiraiyas genjutsu to have any substance. Further, in the case of Jiraiyas genjustsu, the pain bodies where actualy trapped in a cube in the physical world and hence couldnt move at all. Itachi has never shown abilities to have such physical manifestations in the real world.Also the physical damage that the bodies go through in the Tsukuyumi world does not manifest in the physical world. Kakashi did not have any holes in his body after Tsukuyumi nor was he even bleeding. Infact Kisame called it "the genjustsu used to breakdown ones spirit". That description as well as its method of operation as seen on panel pretty much sums up the attack. It is focused causing great mental and subconscious pain to the individual. No physical damage is carried over (as seen in the case of Itachi whose body was still intact). So the belief that pains bodies will be to damaged to function is just false seeing as it doesnt cause physical damage in the first place. And then considering that the pain bodies cannot feel the form of pain that Tsukuyumi inflicts(they are alread dead, there is no spirit to even break down so itachi"letting them live" was never even on the cards) it will be inneffective. Further since it is a near instant attack, it will only serve in weakening itachi and wont even occupy pains time at all.
And the whole idea that Itachi tsukuyumi would somehow affect Naato or even the rest of the pain bodies is completely unsupported by anythin. Tsukuyumi is based on direct eye contact. It will only affect(and prove ineffective) the body whose physical eyes directly look into itachis. None of the others and certainly not nagato.
Though the Tsukuyomi is not real it feels just as real as if it were truly happening that is why when he used it on Kakashi he could no longer fight because of the stress the jutsu creates on his brain. He was out of action for weeks after that.
Also Terry is right that attack would not only affect one but all of them including Nagato ans since Nagato is the one controlling all of the bodies he himself would probably be put out of action. Allowing the team to win.