Hi Andres --

At 3:40 PM -0700 5/24/03, Andres Valloud wrote:
>Hi.
>
>>  Very nice characterization, Andres. Have you by chance ever seen the
>>  book "Laws of Form" by G. Spencer Brown? It is a logical calculus
>>  based on just this notion ....
>
>I have the book :).
>
>And now that you mention it... sometime ago I read that Spencer Brown
>was over at PARC in 1978 or 1979.  Although it didn't say exactly what
>was he doing there, reading "Design Principles Behind Smalltalk" gives
>me the feeling that it was something to do with you guys.

"Laws of Form" was one of the "Whole Earth Catalog" recommendations 
and was a favorite book at PARC. Dick Shoup was particularly taken 
with Brown's approach, and I think he did have him over a few times.

BTW, this particular way of looking at objects is very fruitful and 
has quite a bit of synergy with the "ma" approach that I've also 
advocated over the years ....

Cheers,

Alan

>
>Andres.


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