No unfamiliar science is needed to explain that stability, although the system design calls for the solution of large, discrete optimization problems beyond the best computers available within the Clades. Elephant (see Entry 859) was applied to the problem and reached a constrained solution (the so-called Cocoon Restricted Problem) in four standard years of computation time.


Intended Purpose: There are few secrets to Cocoon, if we except the need for such a massive system. The Basal Stalks permit materials to pass to and from the planetary surface of Savalle at negligible cost; the Exterior Filaments allow economical payload transfer to any point of the Lacoste stellar system, using the momentum-bank principle. The capacity of Cocoon is enormous: one fifty-thousandth of the mass of Savalle could in principle be transferred to space each year, enough to slow the planetary rotation rate appreciably and change Savalle’s day by two seconds.

—From the Lang Universal Artifact Catalog, Fourth Edition.

CHAPTER 1

Expansion

4135 (6219 A.D.)

Where am I?

A man who had seen fifty planets and succeeded in a hundred difficult jobs ought to be like a cat, turning instinctively to land on his feet in any situation. But recently he seemed to be just the opposite, more disoriented with every new task.

Hans Rebka came fully awake and lay with eyes closed, waiting for memory of place and function to seep into his brain. As that came, confusion was replaced by anger.

A week earlier he had been in orbit around Paradox, preparing for one of the most challenging assignments of his life. He and three companions were to enter the Paradox sphere, carrying with them new shielding and a completely new type of recording sensor. If they succeeded they would bring back for the first time information from the Paradox interior — perhaps new information about the Builders themselves.



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