Fibonacci retracement

Why the levels work when they work

There is no physical law here. The levels carry weight mostly because a very large number of participants draw the same ones from the same swings, which turns them into a coordination point. That is a real effect and a fragile one: it holds on liquid, widely watched instruments and means very little on something nobody is charting.

Level	Typical read
23.6%	Shallow, strong trend
38.2%	Normal pullback in a healthy trend
50%	Not a Fibonacci number at all, but widely watched
61.8%	Deep pullback, trend under question
78.6%	Usually a failing trend

Confluence is the only thing that makes them worth using

A retracement level alone is decoration. A retracement level that lands on a prior swing, a range edge or a moving average is a place where several groups of traders are watching the same price for different reasons. That overlap is the actual edge, and the Fibonacci grid is just one more way of arriving at it.

The mistake that makes it unfalsifiable

Redrawing the grid from different swings until a level fits the trade you already have open. If you are willing to move the anchor points, you can always find a level, which means the tool can never be wrong and therefore never tells you anything. Pick the swing before the trade, and leave it.

Extensions for targets

The 127.2% and 161.8% extensions project beyond the original move and are commonly used for take-profit levels. The same rule applies: an extension that coincides with a prior high is worth something, and one floating in empty space is not.

What to do with this

• Draw from one clear swing low to one clear swing high, and do not redraw.
• Only act where a level overlaps structure that already mattered.
• Treat 50% as a crowd level rather than a mathematical one, because that is exactly what it is.