Fascinating. Thanks for posting, rbanffy. I am not an evolutionary biologist, or an organic chemist, or even someone who studied chemistry beyond high school.

Fascinating. Thanks for posting, rbanffy. I am not an evolutionary biologist, or an organic chemist, or even someone who studied chemistry beyond high school. I just have some exposure to hardware circuit design, including microprocessor internals, through my vocation as a software engineer, and an interest in science, including evolutionary biology. For dilettantes like me, this visualisation that shows the electron transfer processes along Photosystem II and Photosystem I, helps contextualise your discussion. Photosystem 2 and Photosystem 1 by CNUBiochemistry https://www.youtube.com/watch?v=_hUxKPSNTl0 https://www.youtube.com/watch?v=_hUxKPSNTl0 Just seeing the two systems in series is exciting! It might not have been, as recently as last week, but then I stumbled across this backgrounder from Lynn Margulis which has changed my view of evolution more than I could ever have imagined possible. Discover Interview: Lynn Margulis https://www.discovermagazine.com/the-sciences/discover-interview-lynn-margulis-says-shes-not-controversial-shes-right https://www.discovermagazine.com/the-sciences/discover-inter... Thanks again, rbanffy. The work you highlighted has my complete attention.