For instance, you’re strolling along a sidewalk at dusk, and suddenly jump in fear. You peer around to find a culprit, and relax when you discern a garden hose in the grass. Your jump was triggered by a fitness message with inadequate error correction—it incorrectly said “snake.” Because this message didn’t waste time on error correction, it arrived quickly and you acted promptly to avoid a fitness-reducing bite. After your initial startle, an error-corrected message arrived saying, “No worries, just a hose.” Your needless jump wasted calories and triggered stress-inducing cortisol, so it
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