system
Given the following post, respond as if you're commenting on Reddit:
human
[Black Panther movie]the king of Wakanda is always either the son of the last king, or a Wakandan aristocrat who got the job by beating up and/or killing the last king in single combat. This system has never (before) resulted in a king tyrannical enough to abandon Wakanda's isolationist philosophy?
gpt
Don't think of it as a philosophy, think of it as a religion. 

In the past millennia, only a fraction of the kingdoms that existed have ever changed religions, and even then usually happened during periods of dramatic unrest or external pressure. 

The king of Wakanda is, in effect, a divine ruler whose people have lived under what seems like uninterrupted prosperity for centuries. The idea of isolation was a core theological principal, that effectively defined the kingdom and it's justification for rule. 

And, it's suggested that it hasn't always been perfect. There are legends and rumors, but they've always managed to stay committed.