Re: Tobi's Sharingan
a) Everything is speculation, that's the idea of exploring a theory and its place in the realm of possibility, if you want to dismiss something purely because it's speculation you can dismiss almost every theory on this site.
Originally Posted by OneStepAhead
b) I speculate that Kamui is of about the same speed as Amaterasu, which was too fast for Tobi to avoid when Itachi's MS activated in Sasuke. I don't think Kamui had no effect because Tobi became intangible fast enough to dodge it, but because it's a technique that sends him to a place (that dimension world) which he can already access easily at will. If someone pushes you through a door and then locks it, you're stuck in that room, but if you have the same key to the lock as the person who pushed you in, then you can just walk right back out. Obito's sharingan developed to MS level techniques is the 'key' to the alternate dimesion world, which both Kakashi and Tobi access - albeit in different ways. Kakashi sends his enemies there from long range but can't go himself, Tobi can go there himself but needs to take his enemies with him from close range to use the technique offensively.
c) You're right, it doesn't matter, I'm simply pointing out that Tobi's sharingan eyes which demonstrated certain techniques were on the sides of his face complementary to the sharingan eyes of Kakashi and Danzo which demonstrated conspicuosly similiar techniques.
If you'd read my theory correctly, you'll notice I think Tobi's space time tech is from what was originally Obito's sharingan - since Obito had already died when Tobi fought Minato he could've already collected Obito's sharingan by that point after hearing about the story of the battle of the bridge, and about the copy ninja Hatake Kakashi, a non-Uchiha with one powerful sharingan eye. Tobi would want the other one.