There's really no debate here. I'm right. A capability is defined as I have defined it. You can say "well Fuschia says otherwise", that's fine, people are wrong about things all the time. Such is life.

Of course I've spent this entire thread explaining a clearly defined term, was that not obvious?

And yes, rotation is relevant to capabilities because leaking capabilities is a critical failure. It's not the only way to protect capabilities though, you can add ACLs or namespaces, which is what Fuschia seems to do.