"Is the object you see historical or objective, which student will answer this question for me?"

Professor Millface stood on the podium, looked at the thirty students present, and asked loudly.

The question is obvious, and it must be an objective thing.

But since Professor Milface would ask such a question, everyone did not dare to answer it directly, they were afraid that there was fraud in it, as the most famous Professor Milface of Star Aviation Federal University, he had the reputation of "King of Routines" in the academic world.

"Professor, is it the cognition of history?"

A delicate-looking girl raised her hand and said tentatively.

"Of course, can you tell me the basis for this?" Professor Millface looked at her with a smile.

"This ...... I don't know. The girl shook her head.

Then, in front of the thirty scholars, a 3D hologram of the starry sky appeared, on which were arrayed with the vast stars of the universe.

"The reason why we see is the perception of history is because of the light." As Professor Milface finished speaking, the starry sky array began to slowly grow and rotate throughout the classroom.

"Because there is light in this world, our eyes have function. The light is reflected on the surface of the object, and then reflected into our eyes through the reflection of the light, which is the process by which our eyes see the object, but this reflection process takes a certain amount of time. This time is the length of history. ”

Milface slowly stomped on the podium and continued: "For example, whenever we look up at the galaxy, the galaxy we see is often the light emitted hundreds of millions or even tens of billions of years ago, that is, we saw hundreds of millions of years ago, or tens of billions of years ago. It's like if we see fireworks in the sky and then hear sounds, because light travels faster than sound. Then our eyes can see things that can transcend history, not to mention history itself. Therefore, everything in our eyes is nothing but history, including the fact that you are listening to me now, that the real present does not exist at all, and the so-called present continuous tense does not exist. ”

Hearing this, the students began to have some shocked expressions, they had never thought about these relationships.

In other words, the starry sky we see is just the starry sky of history, and the planet we see is only a planet hundreds of millions of years ago, and we can see the boundary between life and death. As we see the Sun, it is the Sun eight minutes ago, because the time it takes for light to reach the Earth from the Sun is 8 minutes, and the Moon that we see is the Moon a second ago. ”

Professor Millface said, stepping over to the podium.

At this time, the three-dimensional image changed, and the starry sky, which was still brilliant just now, became a puppy.

Therefore, our eyes can see the truth of everything in this world, but this truth is only what we think is the truth. For example, dogs can't see colors, and the dog world only has three colors: black, white, and gray, and dogs are shocked that humans can perceive colors. ”

"Hahahaha!"

The students all burst out laughing when they heard Professor Millface's humorous lecture.

"And humans can't sense the earthquake, all the animals scattered before the earthquake, and they are also extremely shocked that humans are standing and waiting for death for unknown reasons!"

But this time, no one laughed anymore, and everyone knew what a terrible disaster the earthquake was.

"Although there are still many things that people can't see, I think that the most amazing thing in the world is still the eye, whether it is a human eye or an animal eye, the eye is a transmission tool that can see through life and death, see through the limit, and transcend the dimensions of time and space."

Speaking of this, Professor Millface suddenly paused and asked with a mysterious expression, "So now the question is, can anyone tell me what the eye can transmit?" ”

"Able to transmit light." It's still the delicate and lovely girl just now who raised her hand.

"So, what is light?" Professor Millface asked.

"Light ...... Light is a substance. The girl thought for a moment and said.

"Physics has proven that light can generate electricity, so what should it be physically?" Millface said.

"Light is an energy." Almost all the students said in unison.

"Professor, I have a question!"

With a single voice, everyone's eyes were drawn to it.

I saw a handsome boy with a pair of wide-rimmed glasses raise his hand, although he looked a little timid, but the thirst for knowledge still made him insist on holding his arms high.

"Just ask."

Professor Millface nodded.

"Since light is an energy that the eye can absorb, does that mean that this energy can be transformed in some way into the biological energy of the human individual?" The boy asked loudly.

Professor Millface was looking down at the courseware, and when he heard him ask, he involuntarily raised his head and asked, "What's your name?" ”

"Han Zhuo." The boy said neither humbly nor arrogantly.

"Hee-hee-hee, he's asking this question like an idiot."

"Did he think this was the input-output power mode?"

"Hehe, wouldn't that be able to make a copy just by eye?"

Some taunts and taunts continued to come from the classroom.

"Of course, the energy of everything in the world can be transformed, including the energy of light received by the light-sensitive structures of the eye."

Unexpectedly, Professor Milface actually agreed with Han Zhuo's conjecture.

"How is this possible?" The delicate and lovely girl just now said she couldn't understand.

After saying this, everyone in the classroom began to whisper again.

"Bang bang bang!"

After knocking on the podium three times in a row, the class fell silent.

Professor Millface exclaimed, "It's not impossible. I ask you, who can see the air? ”

The crowd shook their heads.

"But does air exist?" Millface asked.

"Exists."

"Who can see the magnetic field?"

The crowd continued to shake their heads.

"But does the magnetic field exist?"

"Exists."

"Can anyone see the so-called ghosts?"

The crowd shook their heads.

"So, does this so-called ghost exist?"

Professor Milface said, and suddenly a "Sadako" appeared in the three-dimensional image.

"Ah——!h

On the spot, a timid girl was so frightened that she screamed.

"But teacher, isn't this feudal superstition?" The delicate and lovely girl asked unwillingly.

"Perhaps, this is just a fear that the current science cannot explain clearly......"

Professor Millface continued:

"People are always afraid of the unknown, in medieval Europe, Pasteur used a microscope to discover bacteria, pointing out that human beings are sick because bacteria work in the human body, not really God, but after the pope at that time knew about it, the whole Holy See persecuted him. Galileo then proposed heliocentrism, and the papal authorities put him in prison. In those days, they regarded Pasteur and Galileo as pagans who rebelled against religion, and today we would call such people 'feudal superstitions'......"

"But Professor, what is the essential connection between this and your eyes?" The girl asked, still a little confused.

"The study of science needs to plug in the wings of imagination, and the eyes are the source of our imagination, not to mention, today's science has confirmed the existence of star power, this energy?"

Millface smiled at her humorously.

Just then, the bell rang.

"Bang bang!"

Everyone stood up and applauded Professor Milface, who gave another lively and wonderful lecture today.