As long as one can learn

The construction of the "Earth Age" will consume 2.07% of the human GDP every year. Over the years, the total cost has reached 159 trillion federal dollars!

This is an extremely large number, and over time, ordinary people naturally do not want it.

You know... many people on Earth are still eating dirt!

Li Cheng sighed again: "The Deep Space Foundation has to prepare at least trillions of funds to pave a light path for the 'Earth Age'."

"In the next 20 years, Jupiter's industrial base will collect at least a large amount of nuclear fuel, whose fusion energy can be used to launch long-range lasers…"

Zhang Yuan nodded, feeling thoughtful in his heart.

The Earth Age uses the dual driving mode of light sail and nuclear fusion.

Light sail refers to the propulsion of light pressure. When photons collide with a smooth surface, they can change their direction of motion like a ping pong ball bouncing back from a wall, and apply corresponding force to the colliding object to propel the spacecraft.

However, the pressure of sunlight is too small to quickly propel a massive spacecraft weighing tens of millions of tons. Only large artificial light sources from the Moon and Jupiter bases can generate enough pressure to propel it.

Think about it, the nuclear fuel on Jupiter, although inexhaustible, still requires labor costs.

In addition, this optical path requires continuous emission for 20 years, and there are hundreds of thousands of laser emission devices that need to be continuously replaced, which is another huge amount of funds.

It is hard to imagine how Professor Qi Yuanshan, the "father of nuclear fusion", persuaded those shrewd businessmen and sophisticated politicians.

Deep space colonization, this super large-scale project, has no benefits at all.

Even for hundreds, thousands of years, it is impossible to generate any benefits.

This is strange.

After chatting for a while, Li Cheng also felt that discussing these things with the younger generation was a bit boring: "Whether there is enough funding budget is a question that the top leaders should consider, and you don't need to worry too much. Doing your own job is enough."

He shook his head as if he had thought of something and stopped eating. He stood up from the dining table and walked into his own study, thinking for himself about something.

Although Zhang Yuan was curious about this gossip, he could only give up when he saw this scene.

After dinner, Zhang Yuan roast privately: "Your father and my father are just like workaholics. Suddenly he got some inspiration, and then he got up and was busy recording. At this time, he must not disturb him, otherwise he would be angry or confused."

"You're right!"

Li Zhendong agreed: "I remember when I was young, I asked my father why 1+1=2. Do you know what he said? He told me Peano axioms. At that time, I was still in kindergarten. I simply doubt whether he has common sense!"

"Has your sister ever been educated like this?"

"Yes."

Li Zhendong exaggeratedly said, "Once, my sister asked him why the rectangular area is length multiplied by width. He directly talked about things like European space and inner product that he didn't know anything about. Fortunately, my mother is a normal person, otherwise she would have to be brainwashed by him."

Zhang Yuan also burst into laughter, recalling his father's strange style.

At that time, he was playing Rubik's Cube on the sofa when his father suddenly had a sudden impulse and talked about group theory with a child of seven or eight years old.

Yes, group theory, the paper that Gavaro spent the whole night writing.

It's just math from 500 years ago, it's very simple. If you learn this, the children will look at you in a new light

Zhang Yuan was overjoyed and said, "I want to learn, I want to learn!"

"... The group formed by all operations is called the magic cube group. Obviously, the magic cube group is a non abelian group... If you can decompose it into the product of simpler subgroups, and then construct the generator of each subgroup, you can prove its solvability. It has been proved that all magic cubes can be restored within 20 steps."

During this process, Zhang Qiming's face lit up and he fully enjoyed the pleasure of being a teacher.

But in the end, he discovered his son, seemingly staring at him in a daze, unable to understand.

I cannot understand you?

Zhang Qiming blurted out a rude sentence: "What a fool!"

I don't know if I'm talking about my son or myself.

Zhang Yuan sighed, recalling these past events without the kind of resistance at the time, but rather nostalgic.

It has been three years since my father passed away, hasn't it?

Time flies so fast. As soon as you open your eyes and close them, three years have passed. The deceased has passed away, leaving only nostalgia behind.

Seeing that Zhang Yuan was not in a good mood, Li Zhendong turned on the TV and tuned to the children's channel. There was an animated film "Wolf haunts: Bear turns into Sheep" playing on top of it.

"Don't look at me as a bear…"

It's a very childish animated film, but the little girl next to her watched it very happily.

Zhang Yuan asked again, "Aren't your parents heartbroken when you leave?"

"Don't worry, don't you still have a younger sister? "He pointed to a teenage girl next to him and said heartlessly," It's okay to have a few more in the future. Anyway, with advanced technology, we can afford to have any children we like."

He continued, "Think about it, if I don't get on the spaceship and stay on the moon to work, I go home once a year during the Spring Festival, three days each time, and spend two hours with them every day... In 60 years, the total amount of time spent with them is only 360 hours…"

"Now, I stay at home every day to eat, drink, and spend seven or eight hours with them every day. A month adds up to over 200 hours, and the entire holiday has consumed most of my life. What's any regret?"

Zhang Yuan scratched his head, what nonsense logic is this?

However, it sounds a bit reasonable

Li's mother smiled and cut them some fruit, as if accustomed to Li Zhendong's neurotic remarks. "Zhang Yuan, don't go back today, stay at our house, there's still a room available."

Mmm

Zhang Yuan nodded and sighed in his heart.

Li Zhendong's situation is similar to his own, but the difference is that his parents are still alive and his family is happy.

And Zhang Yuan is a product of in vitro fertilization, with sperm provided by his father and eggs sourced from an unknown female donor in the human gene bank. Until now, he doesn't know who his biological mother is, and there's no need to know

But who doesn't like having a kind and kind mother?

In college, their grades were also similar. However, Li Zhendong is a god of learning, playing and making fun, and still scores over 90 points in the exam; But Zhang Yuan is just a student bully and needs to put in more effort to achieve good grades.

This is actually an intellectual gap…

But it's okay!

With that in mind, Zhang Yuan took out his phone and started using the "Super Brain" app. When I saw those mathematical notation, a strange sense of happiness rose from my mind.

There is no need to envy others. Learning makes me happy, learning makes me grow!

As long as I can learn, I have the world!