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Randomness and Multi-level Interactions in Biology

The dynamic instability of the living systems and the "superposition" of different forms of randomness are viewed as a component of the contingently increasing organization of life along evolution. We briefly survey how classical and quantum physics define randomness differently. We then discuss why this requires, in our view, an enrichment of the understanding of the effects of their concurrent presence in biological systems' dynamics. Biological randomness is then presented as an essential component of the heterogeneous determination and intrinsic unpredictability proper to life phenomena, due to the nesting and interaction of many levels of organization. Even increasing organization itself induces growing disorder, by energy dispersal effects of course, but also by variability and differentiation. Co-operation between diverse components in networks implies at the same time the presence of constraints due to the peculiar forms of (bio-)resonance and (bio-)entanglement we discuss.