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A question that requires quite a lot of guts to ask on this site :) Nonetheless, and risking sparking a debate, there are a few arguments that spring to (my!) mind that can support the notion that we thrive better in 'day mode' (i.e., photopic conditions). To start with a controversial assumption, humans are diurnal animals, meaning we are probably, but ...


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If you look at the Wikipedia image from their lovely article on human migration, you'll notice that after arriving from Africa, some humans went west and others went east. The ones who went east went on to most of the arctic regions, except in Western Europe. The physical differences between these groups probably can be explained as random variation, ...


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Both. More specifically, we're a kitbashed light-mode version of a primarily dark-mode group of animals. Mammals famously have terrible color vision, most mammals are dichromats (red color-blind) whereas most other animals like fishes, amphibians, reptiles, and birds are trichromats or even tetrachromats (seeing into the ultraviolet spectrum). In their ...


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