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2)3) Perhaps the venom is in the saliva and thus simply coming in contact with the blood doesn't matter, that doesn't explain the scratches though.
4) Exactly what I was shouting at the TV when it happened. Blood travels very fast and that wouldn't help. Poetic license to make the show work. ;-)
5) Exactly the same thing I thought. Dude, I'm going to stand at the fence and make them come to me. Same thing at the jail. Bang on the bars and make them come to you. I suppose one consequence is that if it's a small area the dead may start to pile up inhibiting the zombies in the back from moving forward.
6) Two things, we don't know what has occurred between them in the last 6 months, the time between season 2 and season 3. At the end of season 2 Rick took out Shane to a) protect himself and the rest of the group and b) because Lori basically asked him too. Then when he did what she asked, she turned on him and walked away. I think he doesn't know what she's going to do or say. Remember, they were having problems before the apocalypse ever started. Season 1, episode 1. There is likely more history than we know. I also think Rick is struggling with the necessity of killing people. It's something he knows he needs to do but something that morally he's struggling with. To me it seems Rick is drawing away from everyone. I do like that the dynamics have clearly changed within the group over the missing months. Eager to see where it goes.
Yes, Lori is annoying and that Damn Carl can't mind. They both get people needlessly killed.
Lastly one word - Michonne!!!!!!!!!

