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Old 06-11-2009, 06:11 PM
Blake Blake is offline
Join Date: Mar 2001
Posts: 11,049
Originally Posted by Irishman View Post
Why is it different? Eyes see by the light in the environment. There is sound in the environment independent of any ability to cry/scream/hoot/etc. Why can't the ability to see by sound evolve to match the way seeing by sight evolved?
Zombie thread.

And the answer is because "seeing" sound is what we call hearing. It's not something different.

You can't posit that an organism could evolve the ability to hear because the ability to see sound is useful. That's a tautology. It's like positing that an organism could evolve the ability to see light because vision is useful. It might be true, but it doesn't tell us anything.