Actually yeah, that makes sense, since Sasuke never actually told Naruto why he was trying to kill him and stuff. But it seems like the terms of the Mangekyou are pretty absolute; like, you have to literally kill your best friend, and I don't think you could really construe it as Kakashi causing Obito's death...and in any case, he should have then developed the Mangekyou right away. So I guess he found another way to do it. But that means that Sasuke will one day face him and force the answer, which is also why I'm worried.

Heh heh, I'm kinda hoping Sasuke pulls it off, I'm just wondering what he'll do afterwards. Go straight for Itachi or hand around awhile? I'm looking forward to the fight, though.

By the way, I'm giving up on trying to cancel the battery order since I can't reach the people. So could you install that battery you have for me? Then I can just eBay the other one and pay you back.