"All right—but could you put it another way? What do you mean, infertility and all that..."
The two of them began modeling again in the lab using their current knowledge of the Quantum Realm.
Janet still had reservations about the mechanism by which the Quantum Realm affected worlds across dimensions, but the rules of space-time within the Quantum Realm lay plainly before them.
Tony had participated in the entire research process of bringing Janet back, and this knowledge was neither fabricated nor incomplete.
Shrink down, lock onto the right coordinates, find an exit coordinate within the Quantum Realm, then restore their size—and they could enter a different space-time.
If this world was a sphere, then the multiverse was a great many spheres, while the Quantum Realm existed in the gaps between them, linking the various multiverses.
Enter the Quantum Realm, find a suitable exit, and one could "travel through space-time."
"Not bad... Now we just need to determine what Topological Model we'll use to select and locate the Time-Space Coordinates. Any ideas? I think we should try a Klein bottle."
A Klein bottle was a non-orientable two-dimensional compact manifold, a surface that could only truly manifest in four-dimensional space.
From that perspective, a Klein bottle really should have been better suited to describing the Quantum Realm—but Harry knew that wasn't the case.
In the movie, Tony had ultimately completed the theory using the Möbius strip, a two-dimensional topological model that was also the two-dimensional form of a Klein bottle.
"...No. We'll use a Möbius strip for rendering and positioning."
"Are you sure? A two-dimensional model can describe this theory?"
"I'm sure. Start the calculations, OIS."
"Understood, sir."
Within the Osborn Group's supercomputer, OIS devoted all available computing power to rendering the model.
The Characteristic Particle used as the simulation target