Re: Re: Responsibility

Arien Malec wrote:
>
> --- Kent Beck <kent-hJ4WY/gWbur3XBa+dPFJ6Fr/[email protected]> wrote:
> > There was a great article in HBR a couple of months ago about the
> > effects of payment frequency on usage. Turns out that for any kind of
> > subscription, folks use the service most right after they have paid. So,
> > for example, and country club could reduce peak demand for tee times by
> > charging annual fees and staggering the fees throughout the year.
> >
> > In the context of the below [partnership contracts for commercial
> > software development], if I wanted more customer involvement, I
> > would charge more often than quarterly. I've seen monthly and even
> > bi-weekly billing work well.
>
> That would probably work with XP, where we actually have something to show
> bi-weekly. I can see how monthly payments would work wonderfully and could
be a
> huge source of revenue for a commercial software development company. The
goal
> is to get the benefits both of commercial software (one product supporting
> multiple companies, with resulting economies of scale) and custom
software.
>
> Early in the product lifecycle, we want to show the customers that we can
> rapidly reduce risk and demonstrate value. So we want payment tied to the
> smallest significant visible demonstration we can get.
>
> Later, we want payment to be tied to creation of value. Again, the
smallest,
> tighest package we can deliver is probably best.

This implies, I think, an EVMS (Earned Value Management System) approach, or
something like it.  I wonder if XP practitioners, who don't, as I understand
it, currently estimate the value of a feature but only the work it will take
to implement it, would be willing to endorse this modification to XP's
practices.  What do you think?


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