A research laboratory runs thousands of training experiments, recording metrics, checkpoints and failure traces. Only a small fraction of the runs is analyzed before the next round begins. Useful findings may remain unexamined in logs from months earlier. This is ArchiveFatigue, not merely a storage problem: the laboratory possesses the material and could learn from it, but production continually outpaces reflection. Unlike RecurrenceMass, no repetition is producing authority here; accumulation is simply outrunning attention. Test it by selecting one recent design decision and counting how many earlier experiment logs were never revisited to determine whether they already contained the answer. ArchiveFatigue: https://socioplastics.blogspot.com/2026/05/socioplastics-3998-archive-fatigue.html DOI: https://doi.org/10.5281/zenodo.20358971