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Politics : Should God be replaced?
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To: Solon who wrote (3224)11/8/2000 11:04:16 PM
From: epicure  Read Replies (2) of 28931
 
You have to remember that eyes are not 100% positive. They represent a very vulnerable soft place on the body- and a direct open link to the brain. If you had them on both sides of your head, if you were being beaten how would you protect your "face"? You couldn't. It's good to have eyes- but it's even better to have them where they are, and where they can be protected.

There are, of course, creatures with multiple eyes. Most of them aren't very long lived. When you look at long lived animals- like ourselves- you need to think about robust systems. Things like eyes aren't really built for durability. Of course two is good- because redundancy in a critical system that is vulnerable is always a good idea. Bilateral symmetry gives us lots of redundancy.
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