9D Physics

The study of physical laws across nine dimensions: spacetime, probability, initial conditions, physical constants, mathematical structures, and logical systems. In 9D physics, the framework includes universes with different rules of logic—different inference patterns, different validity criteria, different definitions of cause and effect. 9D physics investigates how causality would work if A could cause not-A, how prediction would function in a universe where contradictions are permitted, what science would look like if the law of non-contradiction didn't hold. This is physics beyond logic, where even the foundations of reasoning become variables.

Example: "She invoked 9D physics in a debate about climate change. 'In your logical system, the evidence leads to your conclusion. In mine, it doesn't. We're operating from different 9D coordinates—different inference rules, different causality. Neither of us is wrong; we're just logically dimensional.' Her opponent said that was relativistic nonsense. She said that proved her point about different logical systems. The debate continued, infinitely, across dimensions."

by AbzuInExile February 16, 2026

10D Physics

The study of physical laws across ten dimensions, as required by string theory for mathematical consistency. In 10D physics, the universe is understood as a complex manifold of vibrating strings, with six spatial dimensions compactified—curled up so small they're invisible. The geometry of these hidden dimensions determines everything: particle masses, force strengths, the very possibility of atoms and chemistry. 10D physics investigates how different compactifications produce different low-energy physics, how branes (higher-dimensional membranes) interact, and why we can't see the dimensions that shape our reality—they're too small, too fundamental, too intimate.

Example: "He explained 10D physics to his therapist as a metaphor for his hidden potential. 'The visible dimensions are what everyone sees—my job, my relationships, my surface. But the compactified dimensions are my true self—curled up small, invisible, yet determining everything. If you could see the full 10D structure, you'd understand why I am the way I am.' His therapist said that was either profound or a very elaborate excuse. He said both were true, which was very 10D."

by AbzuInExile February 16, 2026

11D Physics

The study of physical laws across eleven dimensions, the maximum framework required by M-theory, which unifies all string theories into a single 11D structure. In 11D physics, the universe is understood as a vast, multidimensional landscape where different regions have different dimensional geometries, different physical laws, different realities entirely. 11D physics investigates the ultimate nature of existence—how dimensions relate, how membranes interact, how the entire cosmic manifold fits together. This is the physics of everything, everywhere, all at once—the most comprehensive, most ambitious, most unprovable framework ever conceived. 11D physics explains everything and predicts nothing, which is either its glory or its fatal flaw, depending on whether you value testability or beauty.

Example: "She tried to explain 11D physics to her mother, who asked what practical use it had. 'It unifies all forces,' she said. 'It explains the fundamental nature of reality. It's the theory of everything.' Her mother asked if it would help find the car keys. She said no, but in some 11D branches, they were never lost. Her mother found them in her purse. 11D physics had failed again, but at least it was beautiful."

by AbzuInExile February 16, 2026

Multiverse Physics

The overarching discipline that studies the physics of the multiverse—the laws, forces, and phenomena that govern not just one universe but the entire multiversal landscape. Multiverse physics asks questions like: What determines the laws of individual universes? How do universes interact, if at all? What is the origin of the multiverse itself? This physics is highly speculative, drawing on string theory, quantum gravity, and cosmology, but it's also the most ambitious intellectual enterprise ever attempted—nothing less than the explanation of all reality, everywhere, in all forms. Multiverse physics is either the ultimate science or the ultimate fantasy, depending on your tolerance for untestable theories.

Example: "She studied multiverse physics and could now explain why our universe has the laws it does: it's just one random outcome in an infinite multiversal landscape, no more special than any other. The explanation was either profound (we're not special) or trivial (things are the way they are because they could be otherwise). She wasn't sure which, but she had a PhD."

by Dumu The Void February 17, 2026

Outer Physics

A speculative field studying the physics of outer spacetime regions—universes beyond our own, dimensions beyond the four we know, realms where different physical laws apply. Outer Physics asks: if there are other spacetimes, what physics operates there? It's physics extended to the multiverse, physics as a local phenomenon rather than universal law. The field is necessarily speculative—we can't observe outer regions—but it's a necessary thought experiment for understanding whether our physics is unique or just local.

"Our physics works here—but what about there? Outer Physics studies the physics of other spacetimes, other dimensions, other realities. Not science fiction, but necessary speculation: if the multiverse exists, it has physics. Outer Physics is the attempt to imagine what that physics might be."

by Dumu The Void March 5, 2026

Retroentropy (Physics)

A hypothetical physical phenomenon where entropy—the measure of disorder—would decrease over time within a closed system, effectively running backwards. In our universe, entropy always increases (the Second Law of Thermodynamics). Retroentropy would describe a cosmos where spilled milk leaps back into the glass, smoke reassembles into a cigarette, and scrambled eggs unscramble themselves. It's the physics of a world where time flows in reverse, order emerges spontaneously from chaos, and the universe gets younger and more organized with every passing moment.

Retroentropy (Physics) Example: "Watching the DVR replay of the vase shattering and then magically reassembling, I joked that my living room must be a local zone of retroentropy."

by Dumu The Void March 11, 2026

Retrothermodynamics (Physics)

The hypothetical physics of heat, energy, and work operating in reverse temporal direction. In retrothermodynamics, heat would flow spontaneously from cold objects to hot ones, friction would accelerate objects instead of slowing them down, and engines would run by absorbing exhaust fumes and fuel while outputting work and air. It's what you'd get if you took a video of normal thermodynamic processes and played it backward—a universe where every energy transaction is perfectly reversed, and the arrow of thermal time points the other way.

Retrothermodynamics (Physics) Example: "The movie scene where a character's breath unfreezes and returns to their mouth is a charming moment of cinematic retrothermodynamics."

by Dumu The Void March 11, 2026