3) Your salvation might also be your undoing.
When the group had found their way to the mine at the other end of the cave (Am I the only who feels like this episode was like a Walking Dead version of Minecraft?) Kelly stumbled upon a crate of dynamite, and despite Daryl warning her not to wander off, and Jerry expressing his concerns about the safety of the dynamite, Carol decided to try to use a stick of it to destroy a good chunk of Alpha’s horde. Then…she dropped it.
Next thing we know, all Hell’s breaking loose. Sure, the dynamite almost certainly blew at least a few hundred walkers to Kingdom Come, but, at the same time, it also caused the mine to start collapsing (Much as Jerry had feared), eventually leaving Connie and Magna trapped beneath tons of rubble.
My point? Things in a zombie apocalypse may not necessarily be as simple as “Have problem. Do thing. Fix problem”. It may wind up being more like “Have problem. Do thing. Make first problem seems less important by creating new problem”.
For example, you might use a gun to kill a zombie, but, because there’s not nearly as much ambient noise around anymore, that gunshot ends up being heard by half the zombies within five miles of you, causing them to all converge on you some time later!
You need to be extremely careful in what you do in a zombie apocalypse because, just because something gets you out of one predicament, doesn’t mean it won’t cause others, which leads me to…