Kertelen’s Second Childhood
The InvincibleThis flow traces Kertelen’s passage from competent explorer to a person forced to relearn consciousness from the beginning.
increasing
Bearing strength in each event
decreasing
The Cave Discovery

The Cave Discovery
Ancient Machine
Kertelen discovers the remains of an ancient automaton in a water-carved cave. The find seems to promise a direct link between the ruins and the planet’s mechanical past.
Sudden Exposure
He emerges from the ravine unable to recognize his companions or speak. His physical body returns, but his personality does not.
The discovery becomes inseparable from the cost of curiosity.
Infant Mind

Infant Mind
Complete Erasure
Sax identifies the condition as more than ordinary amnesia. Kertelen loses identity, language, reading, writing, and the ability to distinguish people from objects.
Residual Functions
His reflexes remain intact, and he can walk and eat when guided. The body continues as a functioning organism after memory has been removed.
The case gives the crew a living image of what the Condor survivor may have endured.
Learning Again

Learning Again
Recognition Returns
Kertelen begins to recognize his physicians and produces early syllables. His recovery resembles childhood development, but it cannot restore the erased expeditionary experience.
Permanent Loss
The doctors conclude that he will never explain what happened in the ravine. His improvement therefore offers limited consolation.
Kertelen survives as a person whose future exists, while his past has become inaccessible.
after the first western expeditions
within the week after Kertelen’s attack
the second week of the stay