Remembering Where You Have Been
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A search that does not track already-reached states can rebuild the same paths forever, so practical searches keep a log of their own activity.
Show
Riverbend's two-way roads let Home–Bakery extend to Home–Bakery–Home, and onward without end.
Watch for
Memory of the world and memory of the search are different books; this log is the second.