“When I entered hibernation, desertification was just starting,” another neighbor said. “It’s not what you imagine, like the desert advancing from the Great Wall. No! It was patchwork erosion. Perfectly fine plots of land in the interior began turning to desert simultaneously, and it spread from those points, like how a damp cloth dries in the sun.”
“Then agricultural production plummeted, and grain reserves were exhausted. And then… and then came the Great Ravine.”
“Did the prediction that the standard of living would go backward a hundred years come true?” Luo Ji asked.
Shi Xiaoming gave a few bitter chuckles. “Ah, Dr. Luo. A hundred years? In your dreams! A hundred years back from that time would have been… around the 1930s or so. A paradise compared to the Great Ravine! No way the two are the same. For one thing, there were so many more people than in the Great Depression—8.3 billion!” He pointed at Zhang Yan. “He saw the Great Ravine when he reawakened for a while. You tell them.”
Zhang Yan drained his glass. Eyes blank, he said, “I have seen the grand march of hunger. Millions of people fleeing famine on the great plains through sand that blocked out the sky. Hot sky, hot earth, and hot sun. When they died, they were divided up on the spot…. It was hell on Earth. There are tons of videos to watch if you want. You think of that time, and you feel lucky to be alive.”
“The Great Ravine lasted for about half a century, and in those fifty-odd years, the world population dropped from 8.3 billion to 3.5 billion. Think about what that means!”
Luo Ji got up and went over to the window. From here he could see the desert across the protective tree line, its yellow covering of sand extending silently to the horizon under the noonday sun. The hand of time had smoothed over everything.
“And then?” Shi Qiang asked.
Zhang Yan let out a long breath, as if no longer having to talk about that period of history had taken a burden off his shoulders. “After that, well, some people came to terms with it, and then more and more people did. They wondered whether it was worth it to pay so high a price, even if it was for victory in the Doomsday Battle. Think about what’s more important: the child dying of starvation in your arms, or the continuation of human civilization? Right now you might think the latter choice is more important, but you wouldn’t have in that day and age. No matter what the future might bring, the present is most important. Of course, that mind-set was outrageous at first, the classic thinking of a traitor to humanity, but you couldn’t stop people from thinking it. And very soon the entire world thought so. There was a popular slogan back then, which soon became a famous historical quote.”
“‘Make time for civilization, for civilization won’t make time,’” Luo Ji contributed, without looking back from the window.
“Right, that one. Civilization is meant for us.”
“And after that?” Shi Qiang asked.
“A second Enlightenment, a second Renaissance, a second French Revolution… You can find all that stuff in the history books.”
Luo Ji turned back in surprise. The predictions he had made to Zhuang Yan two centuries before had come to pass. “A second French Revolution? In France?!”
“No, no. That’s just a saying. It was the entire world! After the revolution, the new national governments terminated their space strategies and poured their attention into improving people’s lives. And then critical technology emerged: Genetic engineering and fusion technology were harnessed for large-scale food production, ending the age of weather-dependent food. From then on, the world would no longer be hungry. Everything moved quickly after that—there were fewer people, after all—and in the space of just two decades, life returned to pre–Great Ravine levels. Then Golden Age levels were restored. People had set their hearts on this road of comfort, and no one wanted to go back.”
“There’s another term you might find interesting, Dr. Luo,” said the first neighbor, drawing closer to him. An economist before hibernation, he had a deeper understanding of the issues. “It’s called civilization immunity. It means that when the world has suffered a serious illness, it triggers civilization’s immune system, so that something like the early Crisis Era won’t happen again. Humanism comes first, and perpetuating civilization comes second. These are the concepts that today’s society is based on.”
“And after that?” Luo Ji asked.
“After that came the freaky stuff.” Shi Xiaoming grew excited. “Originally, the countries of the world had planned to live in peace and push the Trisolar Crisis onto the back burner, but what do you think happened? There was swift progress everywhere. Technology sped forward and broke through all the technical obstacles that had stood in the way of space strategy before the Great Ravine, one after the other!”
“That’s not freaky,” Luo Ji said. “Emancipation of human nature inevitably brings with it scientific and technological progress.”
“After about half a century of peace following the Great Ravine, the world turned its thoughts back to the Trisolaran invasion and felt it ought to reconsider the war. With humanity’s power now on a completely different plane than before the Great Ravine, a global state of war was again declared, and construction was begun on a space fleet. But unlike the first time, national constitutions were clear about one thing: Resource expenditure for the space strategy had to be kept within a specified range, and must not have a disastrous impact on the world economy and on community life. And that’s when the space fleets became independent countries….”
“You don’t actually have to think about any of this, though,” the economist said. “From now on, just think about how to live a good life. That old revolutionary slogan is just an adaptation of the old saying from the Golden Age: ‘Make time for life, or life won’t make time.’ To new life!”
When they had drained their last glass, Luo Ji praised the economist for putting things so well. Now his mind had space only for Zhuang Yan and the child. He wanted to get settled as soon as possible, and then go wake them.
Make time for civilization, make time for life.
After boarding Natural Selection, Zhang Beihai found that the modern command system had evolved far beyond what he had imagined. The giant spacecraft, equal in volume to three of the largest seagoing carriers of the twenty-first century, was practically a small city, but it had no bridge or command module, or even a captain’s room or operations room. In fact, it had no specific functional compartments whatsoever. All of them were identical, regular spheres that differed only in size. At any location inside the ship, you could just use a data glove to activate a holographic display, which, due to the high cost, was a rarity even in Earth’s super-wired society. And at any location, so long as you had the appropriate system permissions, you could pull up a complete command console, including a captain’s interface, which effectively made the entire ship, even the passageways and bathrooms, a bridge, command module, captain’s room, and operations room! To Zhang Beihai, it felt like the evolution from a client-server model to a browser-server model in late-twentieth-century computer networks. With the former, you could only access the server through specific software installed on a computer, but using the latter, you could access the server from any computer on the network so long as you had the right permissions.
Zhang Beihai and Dongfang Yanxu were situated in an ordinary cabin that, like every other one, had no special instruments or screens. It was just a spherical compartment whose bulkheads were white most of the time, making it feel like the inside of a giant Ping-Pong ball. When gravity was produced by ship acceleration, any part of the spherical bulkhead could be transformed into a shape suitable for use as a chair.