> Visible is pretty smack dab in the middle of the Sun's peak spectrum... Does this mean that our vision system evolved to pick up the most energetic part of t

> Visible is pretty smack dab in the middle of the Sun's peak spectrum... Does this mean that our vision system evolved to pick up the most energetic part of the Sun's spectrum that ends up at the surface? Did it evolve this way so our vision systems' cellular agglomerate don't have to expend as much energy gathering that part of the spectrum as opposed to other parts of the spectrum? If so, then is there any linkage via evolutionary theory that imply our vision system might be among the first vision systems to evolve on the planet, because it filled the most-favored evolutionary niche associated with the lowest energy expenditure to gain a evolutionarily competitive advantage over other pre-human species?