Summary: In the context of what is known about how top-down causation must be linked to all biodiversity on Earth, the anti-entropic virucidal energy of sunlight links differences in the energy of two photons from the proton motive force to the creation of microRNAs. The link from the proton motive force to the creation of microRNAs is endogenous RNA interference (RNAi). Endogenous RNAi is manifested as energy-dependent differences in biophysically constrained viral latency. Biophysically constrained viral latency has been linked…