Visibility, Coexistence, and the Limits of Perception: Coherence, Observability, and the Case of Sasquatch

Reality presents itself through coherence thresholds. What becomes visible, measurable, or culturally acknowledged depends on alignment between observer, environment, and phenomenon. Many systems, organisms, and intelligences coexist within Earth’s environment while remaining observationally subtle. This paper explores visibility as a function of coherence rather than presence. Using biological systems, environmental physics, and long-duration eyewitness consistency, the paper frames phenomena such as Sasquatch as a perceptual boundary case that illustrates how much of nature operates beyond dominant human sensing frameworks. visibility thresholds, perception limits, coherence and observability, Sasquatch, Bigfoot, ethnozoology, hidden biodiversity, large mammal ecology, perceptual bias, field alignment, biological stillness, environmental integration, camouflage biology, microclimates, subterranean life, forest ecology, probability gradients, human perception, intelligence diversity, non-human intelligence, evolutionary adaptation, eyewitness consistency, indigenous knowledge, ecological niches, coherence pockets, low observability systems, discovery science, biodiversity expansion, natural history, coexistence, wildlife behavior, sensory filtering, awareness expansion, observational science, rare encounters, environmental mastery, field coherence, silent organisms, ecological intelligence, unseen life, nature perception, anthropology, plausibility gradient, open inquiry, scientific humility, pattern recognition