The Relational Stabilizer: Plastic Stability in Noisy Complex Systems

This work proposes temporal coherence—the reliability of timing and phase relationships across microbial populations—as a fundamental constraint on collective microbial behavior. Many clinically significant phenomena, including quorum sensing, biofilm formation, coordinated virulence, and collective tolerance, depend on sustained synchronization rather than simple cell viability. Yet antimicrobial effectiveness is most often evaluated using lethality-based metrics that may overlook failures of coordination that occur earlier. Building on quantitative observations showing rapid collapse of communication reliability and multi-step signal persistence under specific environmental and material contexts, this framework reframes infection control as a problem of coordination failure rather than eradication. The perspective offers a unifying explanation for the observed effectiveness of passive antimicrobial environments—such as copper-associated surfaces—which suppress colonization and biofilm formation under sub-lethal conditions. The paper outlines a research program for mapping endogenous microbial oscillations, correlating coherence metrics with functional outcomes, and developing theoretical models of coherence thresholds in biological systems. By positioning temporal coherence as an underexplored axis of biological organization, this work bridges microbiology, biophysics, materials science, and healthcare-associated infection prevention, and provides a foundation for future observational and theoretical research.