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Natural Laws

caross at utdallas.edu caross at utdallas.edu
Fri Apr 28 13:57:44 EST 1995

Ed Rybicki (ED at molbiol.uct.ac.za) wrote:
: > Now that is life!  Reflexes, understanding and/or cognition!

: Rubbish.  E coli don't think worth a damn or understand anything 
: except concentration gradients.

You probably know this, but its my understanding they don't even understand
gradient, just concentration. Chemotaxis involves deciding whether to pick
a new random direction or keep swimming straight, not figuring out where
the source of the attractant or repellant is, except by a sort of directed 
random walk. And its certainly not intelligent since supposedly they are
attracted to phenol.
Christian A. Ross <caross at utdallas.edu>

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