"Just so you know, Brad," he said gently, bridging the silence between them, "those of us who work in Strategic Penetrations carry no formal rank. If we did, yours would be the equivalent of a Lieutenant Commander in the United Inner Planetary System Space Force. Mine would be a notch or so above."

He shifted his frame about and bent a long leg to bring his foot up to the lower rung. His tone shifted into neutral. Cool.

"My friends call me Ram. OK?"

Brad nodded, eyeing him. Ram drew back a bit and contemplated the control in his grasp. After a moment he stroked the keys. A rainbow of colors swirled and drifted off, replaced by an ash-gray sphere. Planet Pluto spread across half the tank with its flat stretches of methane frost broken by low, jagged chasms, hillocks and craters. Charon and the Slingshot Logistics Depot hung off near the edge of the tank's flattened top.

Brad glanced at the scene, and back to Ram.

"Brad," Ram spoke slowly, quietly, "a trite expression, repeated all too often during our history, is 'humankind now faces its greatest crisis'. The statement has been declared so often across the ages that it's lost meaning, obviously because it changes in context and perception from one event, century or millennium to the next. I suppose those who said it, believed it. Nevertheless, even if the term 'crisis' never really applied in the past, it does in these times for humankind's destiny.

"The deficits in our nonrenewable assets, and the many other natural substances we depend on, if not resolved within the next few centuries, could force us back into caves, and I don't use that word 'figuratively'. Ceramics, composites, and other substitutes are fine as far as they go, but they do only a tiny part of the job.

"We'll soon be running short of substitutes for our substitutes. Building bigger and better colonies in space over the past thousand years or so has consumed far more of our resources than expected. Earth is almost barren and many space colonies in both regions can no longer meet existing needs fromtheir regions, let alone those of the future.

"In short, our dispersed civilizations must have access to sources for minerals and other industrial substances, not only now but in perpetuity, in order to survive and evolve. Our species isn't built to accept inactivity or slipping backward. If we don't move on to something new and challenging, then we'll drift into extinction. You've heard this all dozens of times; I won't dwell on it further."

Ram stood, paced, and turned his head to keep Brad in sight as he paced and reversed direction. Brad's eyes fixed on the view tank and stayed there. There was nothing new in Ram's words, so far.