A discussion of hybrid open source and proprietary licensing models.

[Rob Myers <robmyers AT mac.com>]

The only problem I can see with the model after a quick read is that 
over-production might be much less of a problem for eBooks and online 
publishing than for printing presses. You have the initial DTP costs and the 
hosting costs, but no physical production or transport costs. This *might* 
affect the model's performance past 2000. The model could always ramp up the 
legal costs associated with publishing to compensate for this. ;-)

- Rob. 


This is a really nice find.  

FWIW, the model is produced using a style of model called "system
dynamics" and it would be a great methodology to use for modeling
the kinds of modeling tradeoffs discussed on this list.  <see
analytic modeling comments on this list 9/27 under "Greetings
List">

There is a free (as in the sense of beer) version of the tool used by the
author Terry Maxwell (biblio ref:

Ventana, 2000. Vensim 4.0 Manual. Harvard, Mass.: Ventana Systems. ) The application can be downloaded from:

http://www.vensim.com/download.html

His code is listed at the end of the article but I'll contact the
author and see whether we can get an original copy.

MVA

At 06:11 AM 10/24/2004, Rob Myers wrote:
> Some modelling:
>
> http://www.corante.com/copyfight/archives/026697.html
>
> "while the authors’ position led to the largest number of authors,
> it also generated the lowest sales figures, and the fewest number of
> volumes published"
> "Similarly, while the reader position generated the highest level of
> sales, the greatest number of different volumes, and the lowest cost for
> books, it also severely constrained the number of authors"
>
> - Rob.
>
>
> --
> http://www.robmyers.org/
> - A decade of art as open content.
> http://www.robmyers.org/weblog/ - Art, aesthetics & free culture weblog.
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