# A cause chain with an open end

Use [C10](../contexts/C10.html)'s tool-location/labelled-hook/one-member report. Make a link for explicit reason, action, reported effect and an unanswered future question. A private reader checks each link against a named note.

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<summary>Grown-up help</summary>

distinguish explicit reason from an unrelated earlier event. No sharp objects, hook installation, real tool use or universal result is involved.

[Day 15 teacher plan](../teacher/day-15.html) · [Blank bench/paper](../interactive/PAPER.html).

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