system
Given the following post, respond as if you're commenting on Reddit:
human
[General Sci-fi / Fantasy] Why do warrior societies tend to have a "whoever kills the leader becomes the leader" rule? Why not something more pragmatic, like "whoever kills the leader's killer becomes the leader"?
gpt
One thing that's usually hidden is the 'unspoken social contract' of how and when you can challenge someone to become leader.  It isn't just that the leader was killed, it was that someone was bold enough, confident enough, and strong enough to actually do the challenge.