The sound demonstration really helped clarity how the largely reliable everyday position and condition of things emerges out of quantum superposition. Does this rule any possible “evolutionary use” of quantum superposition (or other quantum phenomenon) at a biological level (i.e. is the most micro level of biological still too macro for any quantum effects)?
That's a great question! While a cat or even a cell is too large to exhibit quantum effects, the fundamental biological processes within cells occur at the level of physical and chemical interactions between molecules, atoms and subatomic particles which could show these effects. The problem is that within the warm and wet environment of a biological cell, particles are constantly interacting with each other, which leads to their quantum effects very quickly being lost by decoherence. However, if a microscopic process happens quickly effect (in less than a trillionth of a second), then it can still use quantum effects of particles in the very short time that they survive. So, it is possible for quantum effects to still play a biological role, as long as it is during a very quick atomic or molecular step of a biological process. The field of "quantum biology" studies this possibility (https://royalsocietypublishing.org/doi/10.1098/rsif.2018.0640#d1e495), and has provided evidence that quantum effects do play a role in essential biological processes like photosynthesis and cellular respiration.
The sound demonstration really helped clarity how the largely reliable everyday position and condition of things emerges out of quantum superposition. Does this rule any possible “evolutionary use” of quantum superposition (or other quantum phenomenon) at a biological level (i.e. is the most micro level of biological still too macro for any quantum effects)?
That's a great question! While a cat or even a cell is too large to exhibit quantum effects, the fundamental biological processes within cells occur at the level of physical and chemical interactions between molecules, atoms and subatomic particles which could show these effects. The problem is that within the warm and wet environment of a biological cell, particles are constantly interacting with each other, which leads to their quantum effects very quickly being lost by decoherence. However, if a microscopic process happens quickly effect (in less than a trillionth of a second), then it can still use quantum effects of particles in the very short time that they survive. So, it is possible for quantum effects to still play a biological role, as long as it is during a very quick atomic or molecular step of a biological process. The field of "quantum biology" studies this possibility (https://royalsocietypublishing.org/doi/10.1098/rsif.2018.0640#d1e495), and has provided evidence that quantum effects do play a role in essential biological processes like photosynthesis and cellular respiration.