Back in Paris, Joseph immediately went to find Kano. He was a frequent visitor to the Kano house, so when he knocked on the door, the servant of the Kano family saw that it was Dean Bonaparte, and he didn't even need to report it, so he let him in directly.

As soon as I entered the living room, I first heard Kano's cursing voice: "Stupid! Didn't I tell you about this question once yesterday? Just swapped X and Y, how can you ...... I'm so! Oops, I swear to God, I'd rather face a European coalition than face a fool like you! You're ......."

Now that peace has been long, Kano has much less to do than during the war, so he has a lot of time to study at home and teach his son.

Joseph followed the sound directly and walked into the small study next to him. Then he saw Kano standing beside his desk with his beard blowing his beard and staring eyes, on which was crumpled draft paper, and the broken pencil was thrown on the floor, while Kano's six-year-old son, Nikolai, stood on the edge of the table, pale and overwhelmed.

"Ah, Lazar, what's wrong? You shouldn't lose your temper with a child like that. Joseph immediately began to criticize Kano.

"Ah...... Joseph, when did you come? What a ......."

"Nikolai, come to my uncle." Joseph first said this to Nikolai.

Nikolai immediately ran to Joseph.

"Lazar, you asked Nikolai to do the question, but he didn't make it?" Joseph asked.

"Well, that's a very simple question...... I just spoke to him yesterday about an almost identical topic...... This kid is really me off......" Kano said.

"Show me the title?" Joseph knew that this son of Kano was very intelligent.

Kano handed a crumpled piece of paper to Joseph.

Joseph lowered his head and glanced at him: "Lazar, how can you be like this?" You give a six-year-old kid a binary equation, and I'll take a look...... Oh my God, it's a quadratic equation! Lazar, you don't have a fever, do you? You actually toss a little child with a binary quadratic equation, and you are embarrassed to lose your temper with Nikolai? I'll be fair, I'm sure you won't be able to do this when you're ten, or even twelve! Well...... Nikolai, don't cry, uncle helps you administer justice, your father is too unreasonable! Well, Lazar, you yourself feel your conscience and say, you will be able to do this problem when you are twelve years old? ”

"Yesterday, I already gave him a lecture on this subject......" Kano's voice lowered, obviously a little weak. Many times, it is easy for parents to have high expectations for their children, and they always hope that their children can do things that they can't do. At this point, apparently Lazar Cano is the same.

"Hell yes! How is it possible for a six-year-old child to be able to conceptually understand this thing as a genius, and it also involves skill? Joseph said.

"Mozart was able to compose when he was five years old."

"That's art, not math! Besides, who else in this world can do it but Mozart? If you can't be like Mozart, you're a fool? And I, and you—Lazar, you're even more incomplete, and you can even sing scales out of tune—are we all fools? I think Nikolai is definitely better than you in terms of scientific talent alone. I will definitely be able to enter the Academy of Sciences in the future, and sooner than you. You don't know if you can't do this question when you're 12 years old! ”

"But......" Kano grew more and more embarrassed, "Joseph, I mean, that assistant of yours, seems to be able to ......"

"That assistant of mine?" Joseph was stunned for a moment, then burst out laughing, "Hahahaha, Lazar, what do I say?" Turns out you're stimulated! Hahahaha, Lazar, you know, some guys are really monsters who don't make sense, and the first time I saw that guy, I was almost scared to death!

You know, this bastard, at the age of 12, was already doubting the basic proof in elemental geometry, at the age of 16 he derived the general form of the binomial theorem, at the age of 17 he discovered the theorem of the distribution of prime numbers and the method of least squares, and at the age of 19 he used a ruler to draw a regular 17-sided shape...... Well, he's had another genius idea lately, and I very much agree that it should come to fruition soon, well, you see, his new work will scare the hell out of everyone in the European mathematical community...... Hahahaha, well, honestly, it's not as good as that bastard, just like learning music is not as good as Mozart, there's nothing to be upset about. Really, let's not compare ourselves to those bastards, otherwise where else will we be able to eat? ”

Hearing this, Kano glared at Joseph fiercely and said, "Joseph, you are also a bastard!" Okay, you came to my house, is there something going on? ”

"Ah, Nikolai, go outside and play by yourself for a while, uncle has something to talk to your father." Joseph touched Nikolai's head and said.

"Hmm." Nikolai answered and went out.

"Nikolai, don't be naughty outside, don't get into trouble!" Kano added.

Nikolai walked out of the door, and then slammed it shut.

Joseph walked over to Kano's desk, took a document from his bag, and showed it to Kano.

Kano looked down at the papers, and Joseph sat down in the chair next to him, crossed his legs and waited.

After a while, Kano put down the document in his hand and said to Joseph, "Joseph, this is another invention that can change the world!" Well, that also means that we can disarm further. Joseph, did you come to me for something to do with this? ”

The military use of the railway is very obvious, it can quickly mobilize a large number of troops, a large amount of supplies to a critical point at an astonishing speed. If France and its allies have a relatively complete railway network, it means that within the scope of this railway network, the mobilization capacity of the French army is not known to be higher than that of the imaginary enemy. In this way, the side with the railway network will be able to mobilize troops more quickly and create a power advantage in key areas. In the original history, in the Franco-Prussian War, Prussia relied on the advantage of the railway network to quickly concentrate its troops and defeat France in one fell swoop.

In addition, the armed forces have a high strategic mobility capability, which also makes it possible to greatly reduce the number of standing armies. In the past, because it took a long time for the troops in the rear to reach the battlefield, it was like in the previous Battle of Verdun, the Italian legions, which were transferred back to save their lives, walked for a long time to arrive at the battlefield. Therefore, France must maintain a large army sufficient to stand alone in any strategic direction. In this way, the number of troops is naturally indispensable.

But with the railway network, the situation is different, as long as an army can control a large area. In this way, the number of troops required can be significantly reduced. With fewer troops, the money saved can be used in other areas, such as training, equipment and personnel treatment.

"Lazar, you're right. With this, we can reduce the number of standing armies and invest more money in the training of the army, the research and development of new weapons, and the navy. Moreover, once there is a railway network connecting the whole country, it will also be of great help to the economic development of the whole country. Because it also significantly reduces the cost of transportation and time. It is as if in the past few years, the proportion of China's military expenditure in the state budget has been declining year by year, but the allocation received by the army has not decreased much. If you consider that we have rehabilitated so many soldiers after the war, in fact, the amount of money that we spend on each soldier on average every year is increasing every year. Therefore, the growth of the country's economy as a whole will definitely bring more benefits to the army. Joseph said.

"But we can't easily reduce the number of troops until the railway line is completed. And these things, you should go and talk to your brother. Kano said.

"Of course. But I have some thoughts related to the military, and I would like to talk to you about them. Joseph also nodded, "After all, the whole world is willing to trade freely with us now, and the most important reason is that they can't beat us." So, at no time can we compromise the strength of our own army. However, the construction of railways also takes time, and generally speaking, if it is entirely invested by enterprises, then we will definitely only invest in those lines that can make money back in the shortest possible time. I think Lazar, you should be understandable about that. ”

Kano nodded in understanding.

"A lot of times, the most economically important routes, that is, the most important military routes. But that's not all, so there are still some areas that, economically, are limited in the short term to make money laying railways, but for the military, there are very important ones. If only economic considerations are made, the laying of these lines will be quite late. This will also reduce the rate at which we can save money on disarmament, so I wonder if we can do this -- the Ministry of War will allocate some of the funds for the construction of these railways. Although these railways are not as profitable as the others, they still make a lot of money. The Ministry of War could also get some economic gains on this railway. What do you think? ”

"The army can't have its own finances, Joseph, that's what you said." Kano retorted.

Joseph laughed: "Of course. But this money is not directly handed over to the army, but first to the government, which then transfers it to the army. To put it more clearly, it is actually equivalent to the government cutting military spending a little bit in the next few years, but in return for increasing military spending in the future. ”