Quantifying Why We Agree on Reality: From Quantum Fuzziness to Classical Objectivity via Information Replication and Quantum Sensing

Why do independent observers, with imperfect instruments and partial access to the world,tend to converge on the same objective facts? The artigo principal reports a recent evolution-inspired framework that recasts the emergence of classical objectivity as an information-replicationproblem, with a quantitative “recipe” for how quickly shared reality stabilizes from quantum-level fuzziness. In this paper, we expand the scientific background and technical logic behindthat proposal. We connect decoherence and environment-induced superselection to the idea ofredundant records (Quantum Darwinism), then explain how casting objectivity as a quantumsensing task makes it possible to ask a precise question: how robustly can different measurementstrategies estimate the same parameter from different environmental fragments? We furtherdiscuss what counts as evidence, what is merely model-dependent inference, how correlationdiffers from causal mechanism in this context, and what experiments would sharpen or falsifythe framework. Throughout, we emphasize operational definitions, minimal formalism, and thelimits of what can be concluded from present results.