[bena]

This is kind of wrong-ish.

There are parts that might be a million years old, but everything is in a state of flux at all times. Things are changing all the time. Evolution is a process with no end goal.

And just because that got us here today doesn't mean it's the best design. If that's the case, cats are equally the best design. As are dogs, and elephants, and mosquitos, and platypuses. Evolution is the ultimate form of the adage, "You don't have to be faster than the bear, just faster than your friend". Good enough works well enough.

We are effectively held together with duct tape and string. Our eyes are wrong, our backs are wrong, our throats, nerves, circulatory, etc. are all wrong in some manner. And some of the fixes are simple. There is no reason for our ocular nerve to start from the inside of the eye. It just happened that way. And it worked well enough.

You can use a lead pipe to hammer nails, that didn't make it a good choice.