The four of them came to the river, and soon it was night. Mizukawa said: We think it's impossible for the monkey to catch the moon, but what about the future?

Liuzifeng: I don't think it's feasible because the weight of the moon is calculated in terms of 100 million tons. Besides, even if you catch the moon, it's useless!

Duenas said: "Maybe the weight of the moon is only a few hundred grams!" What is the essence of monkey fishing for the moon? The monkey catches the shadow of the moon, and the shadow has no necessary connection with the body. What if the shadow could connect with the body, or even reduce the weight of the moon many times?

Margarita said: Sounds good. I thought of something else. I think we are the shadows of creatures in the four-dimensional space, and we can go to the four-dimensional space by establishing the connection between the shadow and the ontology.

Shrinkage is even better. In the military, large weapons do not need to be loaded with platforms. And a soldier can also carry more weapons, and the combat effectiveness will skyrocket. In the private sector, moving companies are no longer necessary.

Also, I came up with an idea. If the shadow of the enemy's soldiers and weapons is completely removed, won't the enemy army be wiped out?

Mizukawa said: Wouldn't it be nice to turn into a shadow when you are in danger?

One day later, they came here again.

Mizukawa asked: What is the nature of shadows? Whether it's two-dimensional or three-dimensional.

When Margarita heard this, she immediately jumped out: shadows are two-dimensional and can only exist in objects. Because objects are three-dimensional, and two-dimensional can only exist in three-dimensional space.

Duenas shook his fingers: No, it's three-dimensional. Notice no, the shadow is actually three-dimensional. However, shadows are different from ordinary objects. I agree with Margarita that the shadow is actually trapped in the three-dimensional space of the object. How to understand? That is, each object is a separate three-dimensional space, and the shadow cannot leave the body. When the shadow tries to escape, that's when we see it. I don't think the shadow has escaped and it won't affect people. The monkey fishing for the moon may come true, but the monkey gets the shadow of the moon.

Liuzifeng shook his head: I think it's 2.5 dimensions, between 2D and 3D. Shadows are more often in two-dimensional space, and only appear in three-dimensional space when illuminated. I think the shadow is probably the vehicle that communicates two-dimensional and three-dimensional space. The monkey can catch the moon, but it will enter the two-dimensional space. Therefore, we must be careful with the shadow.

Mizukawa hesitated for half a minute: If I say this, you will definitely not believe it. Still, I'll say it. Shadows are actually our past lives, which exist for some reason. In our past lives, we were afraid of light, so we showed our original form. Actually, there is a physical explanation for this. When the human body decays, consciousness will continue to exist. Since consciousness is intangible, it must inhabit a body. Therefore, there is a shadow of talent. It may sound like a mystery to you, but that's exactly what it is. Although it is said to be a past life, the shadow is not directly related to the ontology.

With that, they went back. However, the shadows on the surface of the river are still flickering. What the shadow is, in fact, they can't tell. However, for some clues, they will not ignore them. The story isn't over yet, and the discussion of what a shadow is isn't over yet.