Imagine a fish physicist, Nova Spivack, brilliant and complete in her water‑based physics of pressure, buoyancy, viscosity, and turbulence. Above her, a shimmer at the world’s upper boundary—an optical anomaly where light behaves oddly and objects vanish upward—remains a boundary condition, not a door. She cannot conceive of air, a medium so thin that motion is nearly free, or the canal it offers toüter freshwater to oceans beyond a wall of dry death spanning hundreds miles.

Her blindness is not a single gap but five stacked constraints: density and viscosity treated as universal constants, a lack of alternative distance metrics, speed‑band limits, locally‑valued constants, and one‑way physics that destroys records. Each layer masks a different blind spot, leaving artifacts like glare and surface waves.

If we decompose these constraints, we can project our own perspective forward. The frontier offers seven possibilities: rarefaction, multiple metrics, rate‑band access, variable viscosity constants, irreversible physics, substrate evolution, and randomness as surface glare. The blind spots in our models reveal themselves through the very anomalies we ignore.