But if the crystalspheres had not existed, the rare sites where starfaring developed would spread outward. Species like us would expand, and eventually make contact with one another, instead of searching forever among sandgrains. An elder race might arrive where another was just getting started, and help it over some of its crises.

If the crystalspheres had not existed…

But that was not to be. Starfarers could not spread, because crystalspheres could only be broken from the inside! What a cruel universe it was!

Or so the Nataral had thought.

But they persevered. And after ages spent hunting for the miraculous goodstar, their farprobes found five water-worlds unprotected by deathbarriers.

My touchhand trembled as I stroked the coordinates of these accessible planets. My throat caught at the magnitude of the gift that had been given us on this obelisk. No wonder Cardenas had made me wait! I, too, would linger when I showed it to Alice.

But then, I wondered, where had the Nataral gone? And why? With six worlds, surely their morale would have lifted!

There was a confusing place on the Obelisk… talk of black holes and of time. I touched the spot again and again, while Cardenas watched my reaction. Finally, I understood.

“Great Egg!” I cried. The revelation of what had happened made the discovery of the five goodworlds pale into insignificance.

“Is that what the crystalspheres are for?”

I couldn’t believe it.

Cardenas smiled. “Watch out for teleology, Joshua. It is true that the barriers would seem to show the hand of the creator at work. But it might be simply circumstance, rather than some grand design.

“All that we do know is this. Without the crystalspheres, we ourselves would not exist. Intelligence would be more rare than it already is. And the stars would be almost barren of life.