Chapter 14 Postscript A letter from a physicist

After I finished describing this story, I did not publish it for a long time because of a key point that has been bothering me.Today I received a reply from a physicist, which finally made me realize. (This physicist is famous all over the world, and he is a crippled but not disabled person. I just met him not long ago. Because the passage was too unimaginable and some doubts have not been resolved, so I have not sorted it out yet.) Therefore, I decided to write this letter as a postscript to this story, and the following is the content of the letter. Dear Wei Jun: Received the letter, what you describe is indeed a rare phenomenon, but I want to emphasize that it is absolutely true in theory.

According to quantum mechanics, all physics is a quantized structure, in other words, all have the smallest unit, even time and space.The continuity we usually feel is really just a grand illusion.Therefore, the "intersection point" of the forward and reverse time axes is not really a point without size, but should be an interval.If you imagine the two timelines as two belts, it is not difficult to understand the meaning. The only problem is that the basic unit of time is extremely short. The so-called "Planck time" has an order of magnitude of only ten minus forty-three seconds.Why it skyrocketed by ten to the forty-eighth power for no reason (according to your description, that person existed in the positive time axis for a whole day) is a phenomenon that is difficult to explain.Then again, in the field of quantum cosmology that I study, some events are extremely unlikely, but as long as they are not equal to zero, they are absolutely possible.

I hope the above explanation is of some help to you. My regards to Mrs. Sister-in-law and Mrs. Jin. PS: Please tell Mr. Wen Baoyu that we have received his application form and study plan, and he is likely to receive a full scholarship.A young man with an extremely rich imagination like him is the most suitable for studying physics.I even hope that one day, he can become my son. (full text)