system
Given the following post, respond as if you're commenting on Reddit:
human
[The Walking Dead] How can zombie-Randall walk after Shane broke his neck?

I think I remember other instances of half-decapitated zombies. Surely they wouldn’t be able to manipulate their limbs? Would a zombie paraplegic be able to walk?
gpt
Although they don't realize it on the show, zombies pretty much have to be supernatural. They are animated human bodies, but human bodies need all sorts of things to function, and zombies don't. Why does stabbing a person in the heart kill them? Because the heart pumps blood which carries oxygen, and cells need a constant supply of oxygen to do *anything*, including keeping themselves from literally disintegrating. The fact that destroying a zombie's heart (or any other vital organ besides the brain) doesn't stop them means every aspect of their bodies work differently (and apparently magically). A "dead" body is literally a body that doesn't work anymore, by definition, so they must be "walking" by external means.