When the tide of summer tax refunds receded, it revealed a shoreline that economists had not fully anticipated: American consumers, it seems, had been spending borrowed momentum rather than genuine confidence. Retail sales fell more sharply than forecast in August 2026, exposing the fragility that had been quietly accumulating beneath a season of government-fueled purchasing. The episode is a reminder that stimulus and vitality are not the same thing — and that the distance between them only becomes visible once the stimulus is gone.