There is an anthropological theory that religion itself ( as we know it ) was an invented construct to overcome the taboo against shedding blood to facilitate

There is an anthropological theory that religion itself ( as we know it ) was an invented construct to overcome the taboo against shedding blood to facilitate war. Don't think that the bloodshed taboo is all that ancient or quaint; it was a significant concern for , say, 18th century surgeons.