The Rings and the Worlds
The Magician's NephewThis flow traces the children’s discovery of the rings’ actual function and the risks of navigating the world-pools.
increasing
Bearing strength in each event
decreasing
Andrew’s Incomplete Theory

Andrew’s Incomplete Theory
Rules presented as certainty
Andrew tells Digory that yellow rings send travellers outward and green rings bring them home. He admits that the return method has not been tested on people.
A knowledge gap
The instructions are confident but incomplete because Andrew does not understand the Wood between the Worlds. Digory must rely on those rules while already under pressure to rescue Polly.
A Pool That Fails

A Pool That Fails
The wrong ring
Digory and Polly jump into their arrival pool wearing yellow rings and find only shallow water. Their first explanation of how travel works proves inadequate.
A new test
They change to green rings and successfully begin the return journey, stopping before fully arriving. The trial prevents them from being stranded by an untested assumption.
The Home Pool Marked

The Home Pool Marked
Near loss of the route
Digory is ready to try another pool, but Polly asks whether they marked their way home. The many identical pools make the danger immediately clear.
Practical caution
Digory cuts a strip of turf beside the home pool. Polly’s attention to a mundane detail prevents their curiosity from becoming an irreversible separation from home.
The Green Rings Open Worlds

The Green Rings Open Worlds
A mistaken outward journey
Their yellow rings fail in a new pool, because the children misunderstand what Andrew’s materials do. Green rings carry them out of the Wood into a world instead.
Knowledge earned by trial
The children begin to understand that the rings’ substance draws toward or away from its own place. Their discovery revises Andrew’s theory and expands the map of possible worlds.
The Rings Retired

The Rings Retired
A final safeguard
After the adventure, the children gather and bury the rings so no one can use them again. The decision answers Aslan’s warning about dangerous knowledge.
Discovery contained
The rings opened extraordinary worlds, but their repeated use also brought Jadis into Narnia. Their burial marks a deliberate end to exploration by a device Andrew made without wisdom.
before Digory enters the other world
during the children’s first attempt to return
immediately after the trial return
during the children’s next pool experiment
the day after the children return to London