SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Politics : PRESIDENT GEORGE W. BUSH -- Ignore unavailable to you. Want to Upgrade?


To: Scumbria who wrote (279662)7/23/2002 5:17:27 PM
From: TigerPaw  Respond to of 769667
 
Consider the source of vision, the eye.

When I was in high school we studied some kind of flatworm. There were several in a petri dish and we would cover half the dish with black paper and observe that the flatworms moved from the light area to the shadowed area. We then cut some of them up under a microscope. They had no eyes. There were single cells along their back which were connected to their innards. Without those cells they would no longer move to the dark area. This very primitive source of vision was both useful to the worm and just the kind of primitive change to a back cell that could occur by random process.

cs.colorado.edu



To: Scumbria who wrote (279662)7/23/2002 5:26:47 PM
From: TigerPaw  Read Replies (1) | Respond to of 769667
 
When I look at every aspect of life I see creativity

William Paley said If you see a watch on the beach, you assume it was made by a watchmaker. Analogously, animals must have been made by some higher being.

When you see an animal on the beach (or elsewhere) why do you know it is an animal and not a watch? It's precisely because it is not precise. The animals differ and have variety. It's not the complexity, after all if you see a cell phone on the beach you are not likely to think it is an animal even though it is very complex. Animals (and plants for that matter) are not only complex, not only ingeniously adapted, but they are also imperfectly adapted in many and varied ways. That's how you tell a watch from a seashell.

TP