I understand the two points of vision creates depth perception but using energy to focus with two eyes puts strain on my brain. Could we live with just 1 effectively?
In: Biology
The key here is to understand that you are a grossly outdated design for a very different time. The fact is, if you could travel back in time 35,000 years, the people you would encounter would be basically genetically identical to you.
That means that you and I, as we stand today, are an evolutionary product ideal for surviving in the environment as it was 35 millennia ago. Having 2 eyes gives you a much wider field of vision, and the depth perception that you mentioned previously. Those traits offer HUGE advantages for hunting prey, as well as avoiding being preyed upon yourself.
To further this point one need only look around in nature. You’ll find plenty of things with no eyes, and plenty of things with more than 2 eyes, but a single eye is extremely rare if found at all. More eyes are better for survival.
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