Hogwarts Passer-By Professor

"Dangerous?" Dumbledore narrowed his eyes, then shook his head slowly, "In 1899, the Ministry of Magic's experiments on time travel of more than five hours have all been stopped."

"But time travel within five hours is not prohibited, because it will not have any side effects. It is said that this is the conclusion reached by the Ministry of Magic after a lot of experiments." Eisen said calmly, "However, the side effects may directly affect to time itself."

"You think too badly about things." Dumbledore said so, but his tone was a little heavy.

"In 1899, a witch traveled back to 1402 after being trapped for five days. The side effect was not only that she caused at least 25 people who should have existed to never be born, but she herself aged five centuries in a short period of time, It also caused the day when she returned to modern times to be extended by two and a half days, and was shortened to four hours on Thursday.

Later, the results of the Ministry of Magic's research showed that if no harm was done to the traveler himself and time, the longest time travel should be controlled within five hours.

Indeed, if time travel is controlled within five hours, it will not cause harm to the traveler himself or time. At least that's what the research shows. But no one will ever know that time travel of less than five hours will have no side effects.

Perhaps the traveler himself will not suffer any side effects, but maybe such side effects exist, but it is time itself that takes the place of the traveler himself—"

Eisen organized his language and spoke out his guess slowly.

"You mean, the side effects of time travel itself have always existed. It's just that the side effects of time travel within five hours are borne by time itself. But this level of side effects is not enough to bring time itself. Seriously hurt?" Dumbledore frowned, seeming to understand what Eisen meant.

"That's right, just like that unlucky witch, because she was trapped in the past five days, after returning to modern times, the time of a certain day was extended and the time of a certain day was greatly shortened.

But the side effects of time travel within five hours may not be so serious, but it may continue to accumulate and then reflect on time itself, which may distort people's perception of the past and history—" Eisen said to the point nod.

"As people think, the first Quidditch World Cup started in 1473, and this year's Quidditch World Cup is the 422nd—" Dumbledore looked at Eisen with a complicated expression.

"That's right, you didn't think that it was some wizard who cast magic to obliterate people's cognition. Then, if time itself distorts people's cognition, I think it should be difficult to find out." Eisen's expression was exceptional calm.

His face was calm, but thoughts were flying in his mind. He remembered the first experiment where he went back in time for more than five days.

After he returned to the present world, time backfired on him.

At the time, Eisen thought it was a normal thing. But thinking about it now, I found some problems.

He should have been to 1900 and stayed in that era for more than five days.

But since he went to 1900, it means that he actually traveled through time and space and went to another parallel time and space. Then, here comes the question, will staying in parallel time and space for a period of time bring backlash in time after returning to the present world?

After thinking for a long time, Eisen could only think so.

However, after thinking about it more carefully, Eisen found that it is a good thing to bear the backlash of time.

Because of the time damage caused by time travel, there has to be a feedback. When it is not fed back to the traveler, it will be fed back to the whole world.

Feedback to the whole world will inevitably bring harm to the world. This is true whether it is the sudden lengthening or shortening of a certain day, or distorting the world's perception of history, etc.

And if Eisen himself can withstand the backlash from time, it means that the backlash of time will only be fed back to him alone, and will not affect the entire world.

This means that Eisen's own time travel back to the past can be done arbitrarily. Of course, even if that was the case, he would not go to the past after 1972 to make troubles unscrupulously. After all, Eisen has his own merits.

"So, Professor Eisen, what do you think about the Quidditch World Cup issue?" Dumbledore reached out and clicked on the Daily Prophet.

"No, I don't have the ability to solve the Quidditch World Cup. It is impossible for me to cast a spell to change the perception of all wizards and tell them that this year's Quidditch World Cup is actually not the 422nd, but the 130th." Eisen hastily He waved his hand.

Although Eisen has always believed that the magical power of this world is the power of idealism, the power that can make one's wishes come true, but to really make one's wishes come true and directly change the cognition of all wizards is still impossible.

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If Eisen really did these things with a single thought, then he is not a wizard but a god.

Of course, it is not certain whether there is a god Eisen in this world, although the legend of a god of death has been circulating in the wizarding world. But Eisen's goal, or hope, is to become a godlike figure.

"What do you think about spreading the word about this?" Dumbledore was silent for a moment, then said softly.

"Tell other wizards about the Quidditch World Cup?" Eisen froze for a moment.

"Do you think it's appropriate?" Dumbledore nodded.

"It shouldn't be appropriate." Eisen rubbed his chin, and then looked at Dumbledore, "If my guess is correct, it means that it is time itself that distorts everyone's perception. If you tell other wizards, those who know If there are too many, will it cause other unknown consequences?"

"You're right!" Dumbledore made a thoughtful expression.

"Professor Dumbledore, I think you need to talk to Cornelius Fudge." Eisen put down his hand and made a suggestion.

"Oh?" Dumbledore was interrupted from thinking and had no other expression, and glanced at Eisen indifferently.

"Research on time travel is prohibited, and it is best to stop all time travel within five hours." Eisen shrugged and made a suggestion that would not affect him at all.

"No, the Ministry of Magic's research on time is very important, and I have no reason to persuade Connelly to stop such research." Dumbledore shook his head slightly.

"Isn't it okay to disclose the Quidditch World Cup to him?" Eisen looked at him in surprise.

"Believe me, that guy Connelly is a very smart guy, but his smarts are used elsewhere. He only cares about power and money, and doesn't care about other things." Dumbledore pushed the half-moon glasses on the bridge of his nose.

"Isn't it a big deal to distort the cognition of all wizards?" Eisen was surprised.

Cornelius Fudge, is that really the case? Eisen didn't quite know. However, judging from the fact that Cornelius Fudge has been refusing to admit Voldemort's return in the original book, it is no problem to say that he has the strongest ostrich mentality.

In this way, if Dumbledore mentioned the Quidditch World Cup to Cornelius Fudge, he would probably "turn a blind eye" to these issues.

"No one got hurt by it, Connelly wouldn't care about it, or he wouldn't care about it!" Dumbledore nodded.

"Then there's no other way!" Eisen spread his hands in an innocent look.

"Maybe we don't have to do anything!" Seeing Eisen's gesture, Dumbledore said slowly after a moment of silence.

Eisen didn't say anything, just meditating quietly.

Previously, he thought he had discovered the shocking truth about the Quidditch World Cup, so he couldn't wait to reveal it to Dumbledore.

But after some conversations, Eisen calmed down and realized that there is currently no solution to this problem.

So after thinking about it, things are like Dumbledore said, what can they do except do nothing? If Eisen has the strength, I don't mind sorting out the long river of time and the long river of history directly.

But the problem is, he doesn't have that strength.