After returning to the central control tower, three days had already passed. Andy's chords are housed in a small room here, originally intended for the rare human maintainer, who has disappeared in the nursery's final moments.

There is a strange metal box in the room with buttons on it, and according to Tina's instructions, the two of them can press different buttons to get different diets.

Although there is a fixed daily quota, the amount of this quota is far beyond what the average person can eat and drink, and the machine can generate a can or a bottle of water out of thin air after a beam of blue light.

Tina says it's called a vending machine, and this one has been cracked and turned into a material generator.

"With the amazing pre-war technology, I often imagine what kind of luxurious and comfortable life I would have lived if I could have lived in the past." Andy eats a packet of sugar-coated bomb cereal and chats with the strings like this.

"I'm afraid it's not that good." String drank a bottle of drink, which was flavored with assorted fruits.

"I got a lot of information from Diana, including some information about the pre-war society, and I can tell you for sure that the class divisions and various group contradictions in the pre-war SA made life very uncomfortable for most people. I've noticed that there is even a shortage of food in some areas, can you imagine? In the age of the machine before us, some parts of the country still need the military to control the distribution of food. The two of them ate and drank, either chatting or sleeping, and it can be said that they have been fully rested and relaxed in the past few days.

The tank brain is nowhere to be seen, and he has been messing with Diana. The room between the two is actually a quarantine room, after all, Diana has not yet completed the research and development of a vaccine, so the infected need to stay together, and Akisha's room is next door, but she seems to be addicted to some copywriting.

.................... In an area that few people don't know, Diana has been operating at a high load for several days in a row, and for her, such a level of computing can also be said to be a huge burden, but fortunately, things have finally made a breakthrough today.

"So, that's the conclusion?" The tank was carrying a test tube, and inside was some green unidentified liquid.

"I think yes, out of trillions of calculations, this is the only feasible solution." The image of Diana emerges from the monitors in this laboratory, combining data from multiple sources and a large number of advanced equipment and organic materials inside the nursery, and of course, Diana's own supercomputer computing power, which is the hope of humanity to defeat the new plague.

But that's just the beginning.

"I'm not trying to throw cold water on you, but this thing is obviously not suitable for popularization outside..... And I'm very skeptical, skeptical that this thing might have some not-so-looking side effects. The electronic eyes of the cylinder brain looked at Diana on the screen, and did not show the slightest elation.

"Obviously, your thinking started with the same starting point that was proposed by Western Technology before the war, and you must know what the result of their attempt was, right? Pan-immunization vaccines lack the ability to stably bind to human genes, and subsequent modified versions have created some terrible changes that violate ethics, and this old path should not be valid.... The birth of FEV is a step forward, and it is more suitable for bonding with humans, but I am quite aware of the downside. ”

"FEV definitely has some indescribable malignant tendencies, and in some of the human experiments conducted by the Great Dome, no matter how much we try, the mutants always perform poorly, and they are full of violent tendencies, intellectual disabilities, and other hobbies that are not beneficial to humans. We've even partnered with MIT to use their talent pool to try to make FEV's modification of the human body a little more gentle..... But until the outbreak of the Great War, and before all the destruction of everything, they still did not return any meaningful results. ”

"This thing you've made now.... I'm going to call it a serum, and it's obviously a strain of FEV that you've modified, what's so special about it? Diana's face on the screen did not fluctuate, and a diagram of the four-helix structure appeared on one side of the screen.

"This strain is not one of all the FEV strains in my database, and the only one similar to it is one of the few recent improvements reported by Western Technologies in the final pre-war phase, which they named: FEV-2. However, it is possible that this strain has undergone a serious mutation on its basis, and I suspect that its long-term coexistence with infected people and contact with a highly radiated environment have caused it to undergo a series of wonderful changes that cannot be imagined by humans, and its stability after binding to human genes has reached an incredible degree. "I was surprised.

"And this kind of thing.... What kind of individuals did you get samples from? A man with a distorted face, only one eye, a lack of lips showing a full mouthful of teeth and purple gums, a small tree growing on his head, and a shriveled body with twisted green skin, looked like a ghoul and differed from a ghoul in many ways.

"That guy called Harold?" Of course the tank brain knows who this is.

"When he first came to the nursery at my invitation, I was intrigued by the little tree that grew above his head, a unique plant, or some kind of indefinable life that looked like a plant, and completed a high degree of symbiosis with Harold. There was almost infinite potential in this, he should have died in such a brutal FEV infection process and the hostile mutation that followed, but his pure genes and some luck from his Vault dwellers saved him and kept him alive until now, and I can say that there will not be a second time in the world such a coincidence. As Diana spoke, a series of Harold X-rays, ultrasound scans, and dNA structural analyses appeared on the screen, and among those data were there something that would excite insiders, and the old guy named Harold was in a sense a rare treasure.

"I see, but even if you can ensure safety, given the social conditions that the survivors out there have established so far, it would be extremely difficult, if not almost impossible, to get them to be vaccinated voluntarily, did you think about that?" Diana nodded.

"I have considered all the links and steps of this matter, the original human social structure has been completely destroyed with the fall of the nuclear bomb, and it is definitely not feasible to carry out vaccination work by copying the pre-war measures, what we need is a vaccine intake route that can be understood and adapted by most of the survivors of the period when they fell back to primitive tribal societies in the outer wasteland." Tankbrain drank a bottle of nuclear Coke, and suddenly looked at the empty bottle and thought of something.

"Maybe we can make a drink like cola with an active vaccine and distribute it, and if we can, we can improve the taste to attract people to drink it.... No, it is directly advertised that this thing can prevent and cure the new plague, that it is a miraculous health supplement, and that it is given away for free. ”

"I'm afraid not." Diana disapproved of the proposal.

"First of all, there are no large, automated bottling plants left over from the pre-war industry in the area, whether it's Nuka-Cola or Sunset SARS. Secondly, we lack the means to promote the effectiveness of the vaccine, and most people may not agree with the efficacy of the vaccine. In the end, the free ones may be the most expensive, and the things that are completely worthless on the surface will lose the value of human beings, leading to their waste and trampling. Putting the bottle aside, he found that Diana's analysis was all correct.

"So what do you think about it?" Diana immediately gave her plan.

"We still need Harold, I've done a thorough analysis of the little tree in his head, and this serum wasn't something I made for the wastelanders to be injected into, but something designed specifically for him. It can reactivate the dormant FEV virus sequence in Harold's body after being injected into his body and transcribe some of it, and I expect that this series of changes will lead to a final result that is closer to the ideal state we envisioned. "The tank shrugged

"Shoulder".

"So... It seems that you have really thought about it, will you tell him about the risks of doing so? What if he refuses? Do you want to keep it a secret from him? Diana was smiling.

"No, I'll tell him everything."