# `[2026-09-10]` R49 rung 2 LAUNCHED: Qwen3-1.7B-Base, 1 epoch, seed 4919, on an UNWRAPPED corpus.

**R49 rung 2 LAUNCHED: Qwen3-1.7B-Base, 1 epoch, seed 4919, on an UNWRAPPED corpus.** Operator: *"start the 1.7b training."* Live at `gx10:~/r49-runs/h02-1p7b-1ep/`, 159 steps at ~18.7 s/it (~50 min), corpus sha **`77f37057b2782e49`**. A 0.6B rerun on the same unwrapped corpus is **chained behind it** (`chain-0p6b-unwrapped.sh`, gated on the 1.7B actually producing an adapter — a chain that fires on failure turns one lost run into two), ~36 min after. ⚠⚠ **THE CORPUS CHANGED, SO 0.6B-vs-1.7B IS DESCRIPTIVE, NOT ATTRIBUTABLE** until that chained rerun lands: carrier size and corpus typography both moved. *"Did sense come back at 1.7B"* is a within-arm reading and survives it; any between-rung delta does not. **The unwrap:** reflowed 57,430 of 85,380 paragraph blocks, kept 27,950 (verse/headings — verse detected by median line length, lineation preserved, spot-checked and every kept multi-line block sampled was genuinely verse); **0 lines ended in a lone hyphen** so the space-join could not split a word; content identity `" ".join(text.split())` verified byte-identical on all **852 records**, i.e. whitespace-only. Mid-length-line ratio **0.94 → 0.25** (the residual is the preserved verse). ⚠ Concrete cost of the old defect: **5.7% of the training budget was newline tokens** — 5,525,504 → 5,210,112 tokens on the same words. Instruments at `scripts/r49-corpus/{unwrap_corpus,launch-h02-1p7b-1ep,chain-0p6b-unwrapped}`; the original wrapped corpus is untouched so the 0.6B run's pinned sha `3959036cf851bf62` stays reproducible.