The most annoying logic that is missing in almost ALL of the books is,
Blood Splatter:
In books, Movies, Most importantly tv series. What people forget is that... Once you are dead your heart stops beating and pumping blood through your body, so that if you get a cut or your head cut off or something, YOUR BLOOD WILL SIT THERE! No gushing, splatter, or any source of movment it just sits there.
HOARF HOARF
If you cut a danmed Zombie in freacking half, it will not slpatter, or spray blood all over you. Logic is lacking sooooooo much!
For example: Say, you know how to use a kantana, and you go on a Zombie/Rape/OverKill project and you slash Zombies in half front wards ect. the blood does not spay, squirt, gash because they have no heartbeat therefore the blood does not pump/move.
So my point here is, if you are going to write a ZA book, use logic, no blood flow in the Zombies.
UNLESS: it is a disease
Unless you want to make a story with no logic=no sense I suggest that you do not use this tip, alot of people forget it.