The Case for Detection
The evidence is mathematical. Dirac's 1931 proof demonstrates that monopole existence explains charge quantization. Every grand unified theory predicts them. The theoretical case is overwhelming -- the prosecution rests on ninety years of converging mathematical certainty.
The Valentine's Day Event
On February 14, 1982, a SQUID magnetometer registered exactly one Dirac quantum. The signal was clean, unambiguous, and consistent with every prediction. We present this as direct physical evidence.
The court weighs theory against observation, prediction against detection, mathematics against measurement.
The Case for Absence
Decades of experiments -- MACRO, MoEDAL, IceCube, balloon detectors, SQUID arrays -- all return null results. The defense argues that the most parsimonious explanation is the simplest: magnetic monopoles do not exist in our universe.
The Inflation Defense
Cosmic inflation specifically dilutes primordial monopoles to undetectable densities. The absence of evidence is not evidence of absence -- it is precisely what our best cosmological model predicts.