diff --git a/todo-history.md b/todo-history.md
index 8293943..d110e33 100644
--- a/todo-history.md
+++ b/todo-history.md
@@ -1071,7 +1071,6 @@ The done `todo.md` items in full, as they were written. `todo.md` keeps a one-li
       nothing on that path reads a block's `headroom`: `joinBlocks` and `separationBetween` read
       `text` and `spelling`, and `emitDirectiveBlock` takes the level from the `Walk`. Of the two
       subtractions three readers flagged as double-counting, this is the one that is dead.
-      `PlacedBlock` carries no `headroom`, so a placed block cannot be read for one.
 
 ## 5 — Ship `0.1.0`