The Other’s Ritual Obsession
PiranesiThis flow traces the Other’s increasingly elaborate attempts to summon power and the contrast between ritual utility and Piranesi’s reverence for the House.
increasing
Bearing strength in each event
decreasing
A Search with No Definition

The Promised Knowledge
Desired powers
The Other lists abilities such as flight, immortality, and control over lesser minds. He is not certain what the knowledge consists of, but believes it can be found.
An open-ended pursuit
The lack of a clear definition lets the Other continually revise the project. Piranesi joins the search without sharing the same appetite for power.
The First Rituals

Repeated Attempts
Ceremony as experiment
The Other performs several versions of a ritual intended to free the knowledge and transfer it to himself and Piranesi. Each variation reflects an effort to force a result.
No clear evidence
The rituals do not produce the promised powers. Their persistence reveals how strongly the Other values the goal despite the absence of results.
Calling Addy Domarus

An Ancient Name Invoked
A revised procedure
The Other plans to call on Addy Domarus, a king he believes once possessed the knowledge. He rehearses the invocation and imagines the powers he seeks.
Piranesi’s different response
Piranesi asks whether the dead should be named and honored, then pictures himself as a flying bird. The same ceremony means something different to each participant.
The Temple Hall Proposal

Seeking a Charged Place
A possible site
Piranesi describes the One-Hundred-and-Ninety-Second Western Hall as unlike other halls. The Other sees the solitary doorway and strong atmosphere as useful for his ritual.
A costly errand
He asks Piranesi to map the stars there. Piranesi makes the journey through debris and darkness, while the Other remains focused on information he can use.
A Knowledge That Is Not There

The Search Loses Its Object
The correction
Arne-Sayles says the knowledge that created the House has flowed away and cannot be found within it. The Other’s ritual project rests on a mistaken assumption.
A final contrast
Piranesi accepts that the House needs no instrumental purpose, while the Other continues to pursue control. Their disagreement anticipates the personal conflict that ends in the flood.
At the beginning of Piranesi’s collaboration with the Other
During the years before the albatross year
During the ritual rehearsal in the sixth month
Later in the same ritual discussion
After the Prophet explains the House’s origin