On Wed, Sep 30, 2015 at 3:12 PM, Michael Orlitzky <mich...@orlitzky.com> wrote:
> On 09/30/2015 02:25 PM, William Stein wrote:
>> However, from 2011 to now, year-on-year growth is
>> slightly less than 0%.  It was maybe -10% from 2013 to 2014.
>
> There are probably a lot of people like me who haven't been back to
> sagemath.org since the switch to git. I just `git pull` every once in a
> while.

It's a fair argument that "monthly active users of sagemath.org" is
not exactly the same thing as "users of sage", or something else.
However, in my experience, when I look at pretty much any measure of
the growth of a product in a marketplace -- it doesn't really matter
which -- they tend to be highly correlated.    I'm not making any
claims at all about exact numbers of "users of sage".  I'm talking
only about year-over-year growth of a well-defined metric.    The
metric "monthly active visitors to the sagemath.org" website has the
advantage that it is well defined and we have data about it going back
to before 2008, so it is useful.   I'm concerned because here was
basically no year-over-year growth of that
metric since 2011.

This lack of growth should be a serious cause of concern for us Sage
developers.  It is concrete numerical data that complements Bill
Hart's concerns expressed
elsewhere: "There's nothing I can see technologically in Sage that
even has the potential to disrupt Magma's dominance. Not even in
theory."

Sage is very good and useful in many ways to us.  However, just as
Bill points out, there are very, very real difficulties, and thinking
about them strategically -- which is what Bill suggested we do above
-- is a really good suggestion.   He made a list of questions, and I've
also shared my current strategy above (basically: undergraduate STEM
education!).  I hope people will support my suggestion, and be as
supportive as possible of efforts to improve Sage to make it better
for undergraduate teaching -- let's try to listen to and appreciate
what people like Karl Dieter Crisman, Rob Beezer, Gregory Bard, and
Paul Zimmerman, and these other people suggest carefully, since they
have tons of classroom experience and great ideas.   Let's make new
documentation like Gregory Bard's "Sage for undergraduates" book.

In the long run if Sage is used 1000 times as much in undergraduate
classrooms, the Sage project will be much better off, though this
might sometimes mean making painful design decisions that are less
supportive of
research.

 -- William

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-- 
William (http://wstein.org)

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