Why We Only Observe the Upper Limit Breakage Bias and Asymmetric Observability in Existence-Quantized Geometric Theory

Empirical observations across physics frequently cluster near upper stability limits, while lower limits remain poorly constrained or entirely absent from data. This asymmetry is often interpreted as an intrinsic property of physical systems. This paper argues that such imbalance arises instead from a fundamental observational bias. Within the framework of Existence-Quantized Geometric Theory (EQGT), it is shown that observation is inherently event-driven: only structures that undergo transitions, failures, or breakdowns generate detectable signals. Structures below lower existence thresholds fail to form and therefore produce no observable events, while structures exceeding upper stability limits generate emissions and transitions that dominate empirical records. This systematic overrepresentation of failure events is identified as breakage bias. By formalizing asymmetric observability as a consequence of discrete existence thresholds combined with event-based detection, the analysis provides a unified observational explanation applicable across scales, from nuclear decay and atomic stability limits to cosmological evolution, without invoking intrinsic asymmetry or additional physical mechanisms.