The same morning, a second time
This is the rumour morning from 04.03.03, and the board has not changed: first bid ₹30, highest ₹32.40, lowest ₹29.60, last bid ₹29.80. Word went round at eight that the district trucks were held up. Bids ran to ₹32.40. The trucks arrived at eleven, and by the close the price was ₹29.80.
You already know what to call it and you know the name needs the week before it. That is not the question here.
The question is narrower and it has an answer. Every rupee on that tail is a price at which sacks actually changed hands. A wick is not drawn by a market that considered a price; it is drawn by trades that happened. Somebody bought at ₹32.40, because a high is not a high unless a trade made it one.
What the prices permit you to say
Buyers who took sacks between ₹31 and ₹32.40 paid more than the day finished at. By the close, each of them held onions bought above ₹29.80. That is not a guess about their mood. It is arithmetic on prices the board recorded.
For Rahul it is concrete in a way no chart pattern is. He buys onions for samosas every morning. If the rumour caught him at ₹32 and he took his usual two sacks, his cost for the week is fixed at ₹32 — and the man beside him who waited until eleven paid ₹29.80 for the same onions. Rahul is not ruined and he is not a trader. He simply paid for a price that did not last, and the tail on that board is where it happened.
That is the whole of what a wick records, and it is worth having: prices somebody paid and could not hold.
A long tail is the market's receipt book. It does not say who bought — only that somebody did, and at what.
The same board, drawn twice
Nothing about the prices changes between these two pictures. Only what is drawn on top of them.
The quantities are invented to make the idea visible. A real board does not publish them, which is the honest limit of this reading.
Where it matters is not the same as what it is
A tail in the middle of a quiet fortnight is a handful of people who overpaid on one morning and will forget it. A tail at a price the market has been arguing about for a month is a different matter, because far more sacks changed hands there.
That is 04.05.01's rule arriving from a new direction. Location was always the thing that made a shape specific; now you can say why. Location decides how many people would have been positioned at that price at all — and a price nobody was interested in has few of them, whatever the drawing looks like.
It also begins to explain something the next page takes up properly: why some prices seem to attract activity when the market returns to them months later. Nothing mystical is happening. People remember what they paid.
The discipline this chapter runs on
It is easy to slide from somebody paid ₹32.40 into they are desperate to get out at ₹32.40, so the price will return there. The first sentence is arithmetic. The second is a story, and the story is where most bad chart reading begins.
04.01.05 gave the phrase and it governs this whole chapter: a candle permits a story; it does not prove one. What a wick permits is that positions exist at prices above or below the close. What it does not prove is that anyone acts on them, when, or in which direction. A trapped buyer can sell at a loss, hold for a year, or buy more.
Keep both halves. Drop the first and you have thrown away the only consequence a candle carries. Drop the second and you are writing fiction with a price chart for a cover.