One of the strangest discoveries I ever made is that our forward-facing eyes are probably a relic of an ancient form of X-ray vision.
Not literally X-rays, of course.
But something almost as weird.
We’re taught that animals have forward-facing eyes because they’re predators.
Sounds plausible. Except almost all birds are predators. Most fish are predators. Countless hunters throughout nature have eyes on the sides of their heads.
And the mammals with the most forward-facing eyes aren’t lions or wolves.
They’re primates.
So I started wondering whether we’d been asking the wrong question.
Imagine you’re moving through a dense forest. Leaves and branches are constantly blocking your view. With side-facing eyes, if a leaf blocks something, it’s usually blocked for both eyes.
But with eyes closer together and aimed forward, each eye gets a slightly different view. A leaf that blocks an object in one eye may not block it in the other.
Your brain can combine those views and partially “see through” the clutter.
A kind of natural X-ray vision.
The really surprising prediction was that this benefit should grow the larger an animal becomes. As your eyes get farther apart relative to the diameter of leaves and twigs, the two eyes see increasingly different paths through the vegetation.
More opportunities to see around obstacles.
And that’s exactly the pattern I found.
Out in open habitats, animals tend to have side-facing eyes.
Inside forests, eyes become more forward-facing. And among forest dwellers, the larger species tend to have the most forward-facing eyes of all.
Not because they’re predators.
Because they’re trying to see through a visual jungle.
Ironically, if many of us were redesigned for modern life, we’d probably be better off with somewhat more side-facing eyes. We no longer spend our days navigating dense forests. Wider visual coverage would often be more useful.
But our eyes still carry the signature of the world that built us.
They aren’t primarily hunting eyes.
They’re forest eyes.
For those of you who think macrophages do almost everything, rethink “almost.”
They are programmable cells, recruited into whatever new function evolution needs.
https://t.co/tz6VrVQWpw
man kann merz und der reGIERung ja so einiges vorwerfen aber mein lieber scholli haben die mit der einführung des pfingst dienstags als feiertag gekocht
ESSA É FACILMENTE A CENA MAIS ENGRAÇADA DE ONE PIECE
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