I really dislike when writers forget that adults are watching the show. In the earlier episodes Rick, a cop, doesn't search the area around the cot before tying the guy up who just tried to kill them. Then he doesnt off the Governor when the governor says he wants their surrender. Just not being consistant.
Then of course as everyone mentions, Andrea knew Milton was going to turn as soon as he died, which was likely, and she has to be prompted to hurry up??
Automatic weapons kill NO ONE during the prison assault? The bad guys had a grenade launcher for christs sake. It was like watching an episode of the A Team where no one gets hurt.
And of all the things to take from the town while the soldiers are away is a bus and old people? How about you set up an ambush on the returning 3 survivors and take them out, then you have a nice little town. And since The governor was ahead of Ricks group, and would have beat them back to the town, how could they just load up a bus and drive off anyway?