Erza said, <>, which seemed to overturn the conventional theory.
"Engineering magic does not work on people, animals, and other living creatures that have no magic power, in other words, cannot use magic. Think about why this is the case.
"Ah."
Jin admitted again that he had been blindsided.
Engineering magic does not work on non-magical creatures when they are alive.
"......Well then, why is that?"
"That's my hypothesis. I haven't been able to verify it yet. ......"
I'd love to hear it.
Hmm. ...... that is present in living things and not in non-living things. I thought it would be good to know."
That's a good point.
It makes sense, Jin admitted.
"Then what is it? ...... life, that's for sure, but then what is life? I guess that's what I'm asking.
"Well..."
"What about the branches of the tree? ...... engineering magic doesn't work when it's attached to the original tree, but it does if you break it off. ......We studied some of these examples, right?"
"Yeah, yeah."
Jin thought Erza's method was solid. So he urged her on.
"So, what else but life? He thought, and thought, and thought, and could not come up with an answer. ...... Then Jin returned ."
"......Oh, that time."
"Yes. Then Brother Jin shared his experiences with us. One of the stories he told us was about a spirit life form."
"Oh, I see."
"So, I was wondering if there might be a possibility. It's a <>."
"Soul?"
Jin asked back in a parrot voice.
"Yes, the soul. It's ...... terribly vague and hard to grasp, but..."
"A soul ...... or ......."
"It's something like a spiritual life form," he said. Anyway, engineering magic doesn't work on things with souls."
Elsa gave an additional explanation.
"Do trees have souls? Let's leave such metaphysical and philosophical discussions aside for now."
"Well, that's true," he said.
That's what I said. I said it's a hypothesis. It hasn't been tested yet."
"...... understands you very well."
Jin couldn't help but hug Erza's shoulder.
"Brother Jin?"
"...... No, I just thought Erza was nice."
Elsa is a rare healer, a first-rate magecraftsman, and Jin's beloved wife. She was a good mother 400 years ago .......
In addition, she is the one who can discuss such arguments and logical development with Jin.
Jin felt such a love for Erza.
"...... soul, huh? Then, let's follow up Erza's hypothesis with another hypothesis.
"Brother Jin?"
"Here's what I just came up with."
Jin began to talk about the thoughts that came to his mind after listening to Erza's hypothesis.
"A spiritual life form has a complete understanding and control over the free magical element (ether). Therefore, it seems to me that their existence may be sub-sub-sub free-magic element (ether), or even higher."
"Hmm."
"I guess that the is a or that is in the sense that we can understand it."
"......"
"The <> exists as a body ......, or rather, overlaps with the <>, the body."