続きをchatgptのほうに説明してもらったら

A Different File With the Same Name

The model assumes it's seeing the same "concept"
→ But now the content is different (e.g. yin.wav was soft before, now it’s harsh)
→ The model says “oh! I must have misunderstood this keyword”
→ It adapts to fit the new version, and forgets the old one

This is catastrophic forgetting — classic in small models.

小さなモデルに生じがちなカタストロフィック忘却に陥るんだと？