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It remains to be shown that the experimental swings are the same phase the theory describes, rather than a different effect.","posed_since":"","precise":"Microcosm experiments that vary species-pool size $S$ and effective interaction strength find stable full coexistence, stable partial coexistence and persistent fluctuations, ordered as in random Lotka-Volterra theory. Determine whether the fluctuating experimental state shows the signatures of the theoretical chaotic phase: positive Lyapunov exponent from time series, self-consistent noise statistics of abundances, and phase-boundary location $\\sigma_c(\\gamma)$ set by measured interaction statistics. An answer is a quantitative match or mismatch with these predictions.","problem_ref":null,"references":"","settled_by":"Long, densely sampled time series of replicated microcosms with measured pairwise interaction statistics, compared with mean-field predictions for the boundary and fluctuation statistics.","status_note":"2022 microcosm experiments mapped the three phases with the order predicted by random-interaction theory.","title":"Are fluctuating phases in microbial microcosms the chaotic phase of 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