Glen E. P. Ropella wrote:
> Because he'd bought into the idea that effects cause their causes in
> living systems and he believed computation (as we know it today) cannot
> represent these causal cycles.
>   
> You have to remember that he did much of this work in the 70s and 80s
Here's a paper by Ken Thompson where he describes a regular expression 
implementation based on object code generated on-the-fly for the IBM 
7094.  The 7094 was a 60's mainframe had instructions designed for 
self-modifying code.   (Lisp predates that..)

http://portal.acm.org/citation.cfm?doid=363347.363387

Also note that ~8% of human DNA is highly similar to retroviruses -- 
we're slowly being rewritten from the outside.

 http://genomebiology.com/2001/2/6/reviews/1017. 

...and even by each other..

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T3B-47HPGPW-4&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=937dc8c7b72003e57bbd2971e7ae71be

Marcus




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