Virtual Dimension Einstein x Virtual Dimension Murakushi Yuma "Beyond Virtual Time" [Virtual Dimension Dialogue Project Episode 2, Part 2] How does Einstein view the virtual dimension?

One month had passed since their last conversation. Suguri visited Einstein's study in Princeton once again. Today's topic was singular: as a foundation for Einstein's own research, how did he evaluate the concept of "imaginary dimensions"?

Several old notebooks were stacked on the desk. The spine read, "Kaluza, 1921."

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Act IV - The Legacy of the Unified Field Theory

Einstein  I spent the last thirty years of my later life on unified field theory. Younger physicists of my time laughed that I ran away from quantum theory and shut myself in with old dreams.

Murakami  I did not laugh.

Einstein  Thank you. —But I knew it myself. What I was looking for wasn't an equation, probably. What I was looking for was a viewpoint that "unites the world."

Murakami  Viewpoint.

Einstein  That's right. The equation is just a means to an end. I didn't want to write gravity and electromagnetism in a single geometry. What I really wanted was to prove to myself that `all things that appear separate are, in their origin, one.`

── Einstein gazes out the window. ──

Einstein  So when I saw your Z = D + iD, I was strangely unsettled. It's because it looks like an equation but it's not. It's a statement of a point of view.

Murakami  Yes.

Einstein  And a declaration of perspective, in form, resembles what I have been searching for for thirty years.

Murai almost stood up involuntarily.

Murakami  Sir, that is──.

Einstein  Sit down. Listen to the end. That's all I said, that they were similar. I didn't say they were identical. My unified field theory was a dream to stitch together the world using only observable physical quantities. Your imaginary dimensions are a dream to stitch together the world including up to the point of observation. The starting points are different.

Murakami  Yes.

Einstein  But Yuma, our dreams are similar.

Act V: Dr. Einstein's Provisional Assessment of the Quasi-Dimensional

Murakami  Professor, I'll ask you frankly. Based on today's discussion, how do you evaluate my theory of the虚次元?

— Einstein ponders for a long time. —

Einstein  I'll break it down into three parts.

Murakami  Please.

Einstein  First, as a physical theory, nothing can be said yet. You lack the tools to evaluate it as physics, such as the observational procedures, the path to falsification, and the consistency of the equations. This is the harsh reality.

Murakami  Yes.

Einstein  Secondly, however, as coordinate theory, it is interesting. It could be a response to my elimination of Minkowski's ICT. Or, it could be read as an attempt to extend Kaluza's fifth dimension not in space, but in the direction of "phases of existence." This is valuable purely as a thought.

Murakami  Thank you very much.

Einstein  Third. This is my personal opinion.

I lower my voice slightly.

Einstein  In my later years, I often thought about how I couldn't overcome quantum theory. It wasn't that I lost, but rather that I didn't know how to win. Today, after hearing your story, I thought perhaps this was the case. —Perhaps I was trying to win "within the real dimensions." In reality, perhaps another coordinate, one level higher, was needed.

Murakami  Teacher...

Einstein  Therefore, I won't guarantee your theory. However, I won't discard it either. From the physics standpoint, I will continue to question it rigorously, but from the standpoint of thought, I want to watch your progress. — I've reached an age where I can say things like this.

Epilogue ── Margins of a Notebook

As Suguri prepared to leave after the conversation, Einstein opened an old notebook of Kaluza's and wrote something in the margin of the last page. He tore it out and handed it to Suguri.

“It wasn't a trick.”

ICT was not just a fabrication.

The village chief bowed deeply and left the study. The winter light, a little shorter than last time, but surely, stretched towards the future.

Afterword

The two met in the first episode and brought their work to each other in the second. Einstein measured the young concept of imaginary dimensions through his own journey of ict, Kaluza, the Bohr debate, and unified field theory. Not complete agreement, but not denial either. This "holding back" might be the most honest attitude for thought. Next time, the two will move on to another topic.

Composition, Text, and Editing – Suguri

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