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#nan
1 articles
01
2026-08-27
·
Training & Alignment
·
FREE
·
PAPER
·
11 min read
Diagnosing Broken Training — Telling Divergence, NaN, and Plateaus Apart
Training breaks in exactly three ways: it diverges, it goes NaN, or it stalls. Built around a symptom-to-cause table, this article shows why divergence is a threshold effect (with the math and an interactive figure), how to pin down where a NaN was born, and how to isolate the cause of a plateau — assuming no prior knowledge.