The overarching discipline that unifies general relativity (space and time) with quantum probability into a single five-dimensional framework. Spacetime-probability physics posits that what we call "reality" is just the specific probability slice we happen to be observing, while the full five-dimensional universe contains all possible slices simultaneously. This explains quantum superposition (particles exist in multiple probability coordinates until observed), the arrow of time (we just keep moving in one direction through probability-space), and why your favorite socks always seem to disappear (they've simply shifted to a probability branch where they're paired with a different sock, living their best life in another dimension).
Example: "She studied spacetime-probability physics and now explains that the universe isn't weird—we're just only seeing a tiny slice of it. 'Your dead car battery,' she says, 'exists in a branch where it's fine, and also in a branch where it's even more dead. You're just in the branch where it's inconveniently dead.' Her friends find this less helpful than jumper cables but more philosophically interesting."
by Abzugal February 14, 2026
Get the Spacetime-Probability Physics mug.