The space mining fantasy is literally pie in the sky. No additional gold supply is needed to restore gold to its rightful place, just a higher value per gram. Yes, they have mined out deposits on the sly IMO. Silver is the one that is in short supply, with the actual silver mines already high graded, and those mines being high in the crust, and the AG then used in small doses & lost. Plus, many base metal mines are closed, whereby 70% of mined silver comes as a by product. God said, "The silver and the gold are mine." He never said that gold would always remain the king of metals, and he mentioned silver first.