[Crisis Era 3, Council on Human Crisis Defense, Planning Policy Discussion Meeting]

In one of the corners of the dungeon, there is a spherical building in which a meeting is being held.

……

"It's been three years, and the crisis has not been resolved, and we are still in the dungeon." This was stated by the representative of the American side.

"You also know that there is no water on the ground when it rains, and the water is polluted by acid rain, and many buildings on the ground are also corroded." His secretary said.

"My proposal is: there are two plans: first, the removal plan, through a lot of nanorobots to clean up the pollutants on the ground, the way to clean up is to swallow, the nano machine identifies the pollutants and swallows the pollutants, the front end of the machine has an inlet, can catch the pollutants and engulf, so that the distribution entropy of the sub-pollution will be greatly reduced. However, this project is highly technical and will take time, and even if the nanometer is built, it will probably take at least a few years to get rid of it. The representative of the German side said. Speaking of which, there was a small group of voices in the conference hall that was discussing.

"Technology and resources aside, the time problem may be solved, but less time means a higher technology index: to make these microscopic machines have the ability to replicate themselves, and because they are at the nano level, they are relatively easy to replicate. But this means that each machine particle comes with its own 3D printing function. "But making 3D printers at the micro level is still particularly cutting-edge in terms of current technology." ”

"If we study it very deeply at the micro level, we may be able to achieve it. There are ten dimensions of microscopic in string theory...... It is not impossible to expand the microscopic particles in a low dimension, and then modulate the circuit to transform the microscopic particles into robots. But ......," said the Secretary-General.

"But Secretary-General, the original intention of our nanomachines is to understand pollutants, and the microscopic dimension you mentioned is based on the microscopic level of atoms and even protons, and for an atom, the size of the polluting substance is also quite large." The representative of the Chinese side said that "the pollutant is at least made up of molecules. ”

"Now I'm going to read out my second plan." This was stated by the representative of the German side. Suddenly, the venue fell silent, "The first project is codename: clear. The second project is codenamed: Star Hunting. This is how to build an extraterrestrial survival base, or find a natural habitable environment and colonize it into outer space. It is also possible to transform Mars into a living base, and it is also possible to carry out interstellar voyages to find an extraterrestrial home, but it is obviously easier to do the former. ”

Delegates and scholars pondered. The room fell silent again. If the search for an extraterrestrial home is implemented, then it is necessary to achieve a certain degree of efficiency in interstellar voyages, and if you want to achieve achievements in navigation efficiency, you must use nuclear fusion drive, otherwise with the previous chemical rockets, then the fuel is astronomical, and the fuel is that the spacecraft becomes heavier, and the heavier the aircraft, the greater the thrust to make it faster. The use of nuclear fusion drives requires a certain mathematical model, and if there is a mathematical model, then a lot of scientists and experimental workers are required. Then ask for the "Starry Sky" team, which has the deepest background in aerospace technology. However, if the "starry sky" is released, the federal law will lose its authority. The federal detainees the team in accordance with the law. Another way is to work with the remnants of the "starry sky", and this plan is not entirely impossible to succeed. Therefore, the biggest problem is still in human beings themselves. In addition to it, the plan to transform Mars is worth a try.

"Yes, these two plans are the only way to go. Let's go two ways together. The Secretary-General said with a sigh. So be it, there's nothing to say. ”