Single-Dim Functional Control and Pathway-Specific Inhibition in a Passthrough-Merged Qwen2.5 Hybrid

© Copyright 2026 Chen, Ho Yiing (ORCID: 0009-0006-6816-9891), Independent researcher, charenix.com. All rights reserved by the author. This work is licensed under the Creative Commons Attribution 4.0. Restoring exactly one hidden-state coordinate (d=758, last four blocks of a passthrough-merged qwen2.5 hybrid) flips a Chinese narrative response into a bilingual codeblock-with-emoji response on a specific technical-explanation input, while leaving four other inputs visually unchanged. Four findin