|when do they die? Is it like when their heads are chopped of or when they can no longer function?|
One has been shown to function when their heads were almost completely removed except for his brain and spine. Brain damage is the only thing that kills a zombie, but cutting off the head leaves it harmless. Their lifespan is unknown of varies with the source material. They may very well be immortal.
|And is the zombie merely infected(why did I say merely?) cursed?|
There are two set of rules.
By Romero's rules, the "apocalypse" in "zombie apocalypse" is quite literal. Anyone who dies, regardless of how hey die, naturally becomes a zombie.
By Russo's rules, zombiism is a disease.
Russo's rules have become more popular in the last decade. Possibly due to Blade, which gave vampirism a biological explanation.
|I can drive to Eynsford castle, where my friend lives (15 minutes), I can get a train to London and go to the Tower of London, or I can drive to Lullingstone (15 minutes) and go in the castle there.|
I predict two ultimate results:
1. The entrance is barricaded from the inside. You may be able to get when...
2. Security is compromised. Everyone inside die.
The correct way to deal with a zombie apocalypse is to move to a cold area. The zombies, having no self-defense mechanism, will soon freeze like corpsicles. In that state, they can be easily disposed of.