system
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human
[Supernatural] Why build a devil's gate?

Samuel Colt builds a devil's gate in Wyoming and protects it with a giant railway devil's trap. The colt is the key to the gate, Samuel did not just make the trap around it. Why? Why make a doorway to hell that demons can escape from and start the apocalypse?
gpt
I’ve always thought/assumed Colt found a “gate” (essentially a open portal/hole to hell) and built the doorway and trap around it to close that open portal. Not sure there’s a definitive canonical answer!