12 March 2026
Why the studio still draws the 50 percent line
Fifty percent is not a Fibonacci ratio. The sequence that gives 61.8 and 38.2 does not hand you one half. We say this on the first evening, and then we draw the line anyway.
We draw it because students will meet it everywhere else: in a book, on a colleague’s chart, in a conversation that treats the midpoint as if it were kin to 61.8. If we leave it off our sheet, the first outside chart they see will look like a contradiction. So the line goes on the paper, and the label beside it is the word midpoint.
The classroom comparison is always the same swing. Draw 50 and 61.8. Ask which prices sit between them and which sit beyond both. On a tall swing the gap is wide enough to matter; on a short swing the two lines nearly touch and the argument about which one “worked” is usually noise. Seeing that on paper stops a lot of later superstition.
There are days when the midpoint is the interesting mark for an ordinary reason. Price travelled halfway back through a swing and stalled, and the stall is visible without any ratio at all. In that case we talk about a measured half. We do not upgrade the half into a Fibonacci level to make the stall sound more learned.
Purism that refuses to draw the line makes students clumsy in mixed company. Treating the line as a Fibonacci ratio makes them sloppy in this room. The label does the sorting. Midpoint means midpoint.
On the ratio atlas page the 50 percent row is written in the same spirit. It stays in the list, and it stays described as a half, not as a cousin of 61.8.