In the 1956 film, how does the conversion process work? The dopplegangers are grown in pods, syphoning their target's memories until the mark falls asleep. Something unspecified happens to the true person's body, then the Pod Person takes their place. However, around the end of the film Original Becky falls asleep for the tiniest moment, then wakes up as Pod Person Becky, no pods or switcheroo required!
Typical 1950s B-Movie science fiction logic. It's the same reason why ants can grow to be 50-100 feet long (Despite that being biologically and physically impossible), aliens are able to survive on earth (even though there's a good chance our atmospher, gravity, and whatnot would be fatal to many alien lifeforms), and whatnot. Plus, "suspense overshadows logic". In other words, in order to build tension, movies have a habit of throwing aside established "rules" of the film.
In the 1978 film, what is that leather thing that Kibner wears on his hand? It doesn't seem to serve any purpose.
A support for carpal tunnel syndrome. He apparently wrote his books by hand.
What I wanna know is why exactly does the person the pod people imitate crumble into dust. I understand that destroying the body is necessary but how exactly did they do that?
In the 1978 remake how long does it take to create a replica? First it seems to take all night, or at least enough time for Bennell to drive across town to save Elizabeth and plenty of time for Jack and Nancy to look at an unfinished pod-person. At the end however Elizabeth get's replaced in the time it took for Bennell to go look at a boat and come back.
You're right, it is variable. I'm assuming the pod that got her in the end was a better pod - having been freshly grown at the warehouse, thus worked better.
In the 1978 version, what the hell is the dog thing? Why does it even exist? Why would a pod invade an animal, and why would that animal gain human features? It's almost this movie's Giant Space Flea from Nowhere.
During a scene with Matthew is running, with I believe Elizabeth, and they hit the pod that is assimilating the banjo player and it begins to bleed. My guess was that the pod accidentally confused both the banjo player and his dog, creating the monstrosity that we saw.
It's heavily assumed that this has been done before, but how exactly can the pods infect completely different biological organisms without sufficiently habituating with them to figure out a way to assimilate them. All the movies show the process being seemingly instantaneous the moment the pods arrive on Earth.