Liquidity changes the meaning of a retracement. Levels that look precise on a static chart behave differently when participation is thin.
For FX and index traders working from Japan, map your Fibonacci zones against Tokyo, London, and New York session windows. Note which reactions occur with genuine volume and which are ghosts.
Training sessions at Tech Infrastructure Net include a timing overlay exercise: the same level, three sessions, three journal notes. The pattern that emerges is usually more useful than another ratio on the pane.