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> it creates a cognitive load, that someone needs to invest a significant amount of effort to truly learn it.

To benefit from SELinux, I don't think you need to "truly learn" it... but you do need to invest some effort developing troubleshooting skills that are specific to SELinux. But the thrust of your point is right. We need to invest some effort to benefit from it.

I think postings like RedHat's are useful because they show us in a concrete way why it might be worth the small effort to develop the troubleshooting skills, or even worth the large effort to really understand SELinux.

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