I agree it is hardly anything new but my point was that in this thread we've not told Scorpion he is wrong about his concept of karma angels by saying "..but in Hinduism..." all we have commented on is what he has told us about his knowledge of karma angels.
All true.
What I was trying to get at is that we shouldn't always think of concepts like Scorpion's karma angels, adopted from phrases used by the Spiritualists he's listened to, as things people just made up. Instead, they're things they haven't made up. Not because they came from some other source, but because they're unformed concepts, literally not fully made up. They're like metaphors. They're not really metaphors because people claim to believe in them as literally real. But they're so vague their realness is beside the point. They serve the same role as metaphors in communication of ideas. They're placeholders in mental narratives.
Consider a more commonly mentioned (at least in the U.S.) variety of spiritual being, the "guardian angel." People believe, and will say, things like, "My guardian angel was watching out for me that day. If I'd been ten feet closer, that falling branch would have killed me!"
You might want to inquire further about what the speaker thinks actually happened. Where do guardian angels come from? How are they organized? Do they work round the clock, or in shifts, or are they sometimes absent? By what instrumentality do they influence events? Do they protect everyone, and if not, what specific things do you have to do to gain their protection? When your sister-in-law died in that car crash, had she done something to anger her guardian angel, or had she failed to earn a guardian angel's protection in the first place, or was hers off-duty at the time, or was it just not powerful enough over earthly affairs to protect her from the crash?
A few of the people you direct such questions to will answer something like, "Whoah, calm down, I'm just saying I'm glad I wasn't hurt."
A different few will regale you with elaborate mythologies about exactly what their guardian angel looks like, its name, and the entire day to day inside workings of the invisible bureau of angelic affairs, and so on, derived from folklore from various sources and/or their own imaginations.
But the rest, the majority, will just stare at you wondering why you're having trouble with basic communication, as though you'd asked them to repeat what they just said in Morse Code.
We think and communicate in narratives, and narratives take particular familiar shapes. "Subject did verb" is one typical shape, but a more useful one is "subject did verb because []." What goes inside the brackets is another narrative; this is how we link narratives together into bigger narratives, which is so beneficial that we've evolved, or learned, to feel comfort in doing so. Our brains are so used to processing that shape that if a piece of it is missing, we fill it in with a meaningless placeholder. "Because my guardian angel" is such a placeholder.
Does that seem silly, dumb, superstitious? Try "I was just lucky the branch didn't fall ten seconds later." That might sound more rational. But what does it actually mean? "The subject (a falling branch) did verb (missed killing me) because [I was lucky]. Why was I lucky? Because the branch missed me." Or equivalently, it missed me because it missed me. The concept of luck is the exact same kind of meaningless placeholder as a guardian angel. It makes just as little sense to try to probe it or elaborate on it. Can a magic potion (like in Harry Potter) or a gene (like in the Ringworld franchise) cause it? Can a curse take it away? Most people who casually mention luck in daily conversation don't make such category errors, but of course some do, which is why we all know about four-leaf clovers and Friday the thirteenth.
This also kind of reminds me of: "The expansion of the universe is accelerating because of dark energy. What's dark energy? It's the otherwise unknown stuff that causes the acceleration of the expansion of the universe." It's okay to not have any better explanation when there's limited information to go by, but note that the cosmology community did choose to give the unexplained phenomenon a name that makes it sound like something far more tangible.
In the end, "karma things happen because karma angels" means the same as "karma things happen because they happen." As far as I can tell, Scorpion doesn't have any more reason to care about those angels' exact nature, or the origin of the concept, than we have to care about whether that bridge we'll cross when we come to it is cantilevered or suspension.