RIchard --

There are four papers, and one of them (or perhaps the bunch of four) 
has this title. I will write Danny Bobrow to see if anyone has put 
pdf files on line (maybe he will).

Cheers,

Alan

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At 12:05 PM +1300 2/14/02, Richard A. O'Keefe wrote:
>I quoted someone's boss's list of criteria for an OO language, including
>>(4a) multiple inheritance,
>to which Alan Kay responded:
>
>	Regarding 4a, I think a much better way to do this is with a multiple
>	perspective architecture as in Goldstein and Bobrow's PIE system
>	(done in Smalltalk at PARC).
>
>I have some of the blue-and-white reports; they are real gold.
>Unfortunately, very few of them are (as yet) available through
>http://www.parc.xerox.com/pubs.html, and I don't see PIE even
>listed there.  If it's "A Layered Approach to Software Design",
>then it's listed, but not available.  I've spent some time looking
>for an on-line copy of the PIE paper, does one exist anywhere?
>Is the software itself available anywhere?


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