Some algorithmic traders argue that cross pairs (EUR/GBP, EUR/JPY, GBP/JPY) offer cleaner technical patterns because they remove the US dollar's dominant noise. Without the Fed's policy shadow, these pairs may reflect pure relative-value dynamics between two non-USD economies. However, crosses have wider spreads and lower liquidity, increasing execution risk. The trade-off between pattern purity and transaction cost defines a frontier that systematic strategies must navigate carefully.