@liohong @jonny Okay, but, for the record, it's actually kinda glorious how little we understand.
Like, in my case, the passive "hard-wired" immune system is complicated as hell. But the active "game-time" immune system is just flat fucking insane.
Or, the organic explanation for what I am quite confident was organic "major depressive disorder" that I underwent for 30 years. (Now in remission for almost a decade, and we do not have any idea why.)
On my good days, it's a world of wonder.