On Feb 19, 2013, at 6:12 AM, Joseph Bergin wrote:
> I've also suggested that the solution be stated strongly in an imperative 
> form.

Joe,

Regarding the "imperative form" part, I just ran across this last week:

"Also, the <i>descriptions</i> that comment completed work are better guides 
for <i>new</i> work than prescriptive instructions. We've found that sequential 
descriptions, in an order reflecting the emergence of a coherent whole, <i>are 
more generative than instructions.</i> The reasons for this have to do with our 
natural ability to make coherent things, but it's enough for now to say that 
descriptions are simply more evocative and less restrictive than prescriptions."

This is describing some work done back in 1997 on writing sequences by 
Christopher Alexander & Greg Bryant. 

[quote taken from:
   http://www.gregbryant.com/grogbrat/aspen97/RANDP2.html

 for larger context see:
   http://www.gregbryant.com/grogbrat/aspen97/index.html ]

"Imperative" strikes me as generally being prescriptive. Though I just looked 
ata couple of patterns in APL and they certainly seemed to express the 
"Therefore" part very prescriptively, e.g. in 221 Natural Doors and Windows:

"On no account use standard doors or windows. Make each window a different 
size, according to its place."

So maybe his work after APL caused Alexander to change his mind on this.

-- Ron --

p.s. Great to see some actual discussion on this mailing list!



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