"No."
Lü Yongchang rejected Lin Yongnian's statement. "A Klein bottle cannot exist in three-dimensional space."
"Then..." Lin Yongnian grew even more confused. "Then why did you just say..."
Lü Yongchang was not at all displeased with Lin Yongnian's reaction.
After all, humans had never been born knowing everything.
Only by passing knowledge down from generation to generation could human civilization hope to endure in this dark universe.
So he carefully chose his words, explaining the mysteries involved to Lin Yongnian as clearly as he could.
"Gravity."
"As the most unique of the four fundamental forces, gravity can pass through the 1+3-dimensional hyperspatial membrane we live on and affect higher dimensions."
(1+3 dimensions refers to one dimension of time and three dimensions of space.)
"These twelve Gravitational Sources don't act on the three-dimensional space we inhabit, but on four-dimensional space, one dimension higher!" Lü Yongchang's eyes filled with wonder. "That's why their arrangement looks so chaotic to us."
"The positions of these Gravitational Sources are actually the three-dimensional projection coordinates of a four-dimensional Klein bottle!"
"This is also the biggest flaw in our spacetime theory."
"Our spacetime theory only describes the laws of three-dimensional space. It doesn't touch on spacetime in higher or lower dimensions at all."
At this point, something suddenly clicked in Lü Yongchang's mind.
"I understand now..."
"If spacetime theory applicable to three-dimensional space is the foundation of a level six civilization..."
"Then what a level seven civilization must do is extend that spacetime theory to other dimensions!"
Completely mastering spacetime theory involving four-dimensional space was unrealistic for humanity as it stood.
But that did not mean humans could not put those laws to use directly.
Especially since human civilization also possessed a complete set of detailed model data from a civilization at the pinnacle of level