Already now, in its nascence, it affected the course of the universe. The time came when a node fully recalled Earth. That memory went out to others as part of the ongoing flow of information, ideas, feelings, reveries, and who knows what else? Certain of these others decided the subject was worth pursuing, and relayed it on their own message-streams. In this wise it passed through light-years and centuries, circulated, developed, and at last became a decision, which reached the node best able to take action.
Here the event has been related in words, ill-suited though they are to the task. They fail totally when they come to what happened next. How shall they tell of the dialogue of a mind with itself, when that thinking was a progression of quantum flickerings through configurations as intricate as the wave functions, when the computational power and database were so huge that measures become meaningless, when the mind raised aspects of itself to interact like persons until it drew them back into its wholeness, and when everything was said within microseconds of planetary time?
It is impossible, except vaguely and misleadingly. Ancient humans used the language of myth for that which they could not fathom. The sun was a fiery chariot daily crossing heaven, the year a god who died and was reborn, death a punishment for ancestral sin. Let us make our myth concerning the mission to Earth.
Think, then, of the primary aspect of the node’s primary consciousness as if it were a single mighty entity, and name it Alpha. Think of a lesser manifestation of itself that it had synthesized and intended to release into separate existence as a second entity. For reasons that will become clear, imagine the latter masculine and name it Wayfarer.
All is myth and metaphor, beginning with this absurd nomenclature. Beings like these had no names. They had identities, instantly recognizable by others of their kind. They did not speak together, they did not go through discussion or explanation of any sort, they were not yet “they.” But imagine it.
Imagine, too, their surroundings, not as perceived by their manifold sensors or conceptualized by their awarenesses and emotions, but as if human sense organs were reporting to a human brain. Such a picture is scarcely a sketch. Too much that was basic could not have registered. However, a human at an astronomical distance could have seen an M2 dwarf star about fifty parsecs from Sol, and ascertained that it had planets. She could have detected signs of immense, enigmatic energies, and wondered.
In itself, the sun was undistinguished. The galaxy held billions like it. Long ago, an artificial intelligence—at that dawn stage of evolution, this was the best phrase—had established itself there because one of the planets bore curious life forms worth studying. That research went on through the megayears. Meanwhile the ever-heightening intelligence followed more and more different interests: above all, its self-evolution. That the sun would stay cool for an enormous length of time had been another consideration. The node did not want the trouble of coping with great environmental changes before it absolutely must.
Since then, stars had changed their relative positions. This now was the settlement nearest to Sol. Suns closer still were of less interest and had merely been visited, if that. Occasionally a free-space, dirigible node had passed through the neighborhood, but none chanced to be there at this epoch.
Relevant to our myth is the fact that no thinking species ever appeared on the viviferous world. Life is statistically uncommon in the cosmos, sapience almost vanishingly rare, therefore doubly precious.
Our imaginary human would have seen the sun as autumnally yellow, burning low and peacefully. Besides its planets and lesser natural attendants, various titanic structures orbited about it. From afar, they seemed like gossamer or like intricate spiderwebs agleam athwart the stars; most of what they were was force fields. They gathered and focused the energies that Alpha required, they searched the deeps of space and the atom, they transmitted and received the thought-flow that was becoming the galactic brain; what more they did lies beyond the myth.
Within their complexity, although not at any specific location, lived Alpha, its apex. Likewise, for the moment, did Wayfarer.
Imagine a stately voice: “Welcome into being. Yours is a high and, it may be, dangerous errand. Are you willing?”
If Wayfarer hesitated an instant, that was not from fear of suffering harm but from fear of inflicting it. “Tell me. Help me to understand.”
“Sol—” the sun of old Earth, steadily heating since first it took shape, would continue stable for billions of years before it exhausted the hydrogen fuel at its core and swelled into a red giant. But—
A swift computation. “Yes. I see.” Above a threshold level of radiation input, the geochemical and biochemical cycles that had maintained the temperature of Earth would be overwhelmed. Increasing warmth put increasing amounts of water vapor into the atmosphere, and it is a potent greenhouse gas. Heavier cloud cover, raising the albedo, could only postpone a day of catastrophe. Rising above it, water molecules were split by hard sunlight into hydrogen, which escaped to space, and oxygen, which bound to surface materials. Raging fires released monstrous tonnages of carbon dioxide, as did rocks exposed to erosion in desiccated lands. It is the second major greenhouse gas. The time must come when the last oceans boiled away, leaving a globe akin to Venus; but well before then, life on Earth would be no more than a memory in the quantum consciousnesses. “When will total extinction occur?”
“On the order of a hundred thousand years future-ward.”
Pain bit through the small facet of Wayfarer that came from Christian Brannock. He had most passionately loved his living world. Its latter-day insignificance
