RE: [AM] The Spiral Model

Steve,

Oh how often we get stuck on terms - it is often just,
simply one term versus another, and what meaning is
attributed to each that is different for each of us. 
There is obviously something about the term Spiral you
don't like.  Otherwise, your last paragraph discerns no
difference between one use of Spiral, and XP, although
you say it only approaches agility.

Is your statement an attempt to "protect" XP or
agility, or is there something more to your last
paragraph?  

The fundamental precepts behind the Spiral method are
identical to Agile and even XP.  Isn’t it possible that
Agile concepts found something that is fundamental,
underlying a successful project that was found before -
and now we are splitting hair over terms?  Please tell
me I’m wrong.

Prove me wrong - that is - prove. ;)

Mark

On Thu, 12 Feb 2004 16:11:20 -0700, Steven Gordon wrote:

> 
> In a typical XP or Scrum project, the customer can
> expect working software with some business
> functionality every few weeks, including within the
> very first month.  In a Spiral project, the amount of
> time spent on requirements, analysis, design and
> architecture prior to producing the first software
> deliverable with any business functionality could be
> much longer than one month.
> 
> If you take Spiral to the extreme that you build some
> new business functionality every few weeks, then you
> would be approaching agility.  This would end up
> forcing us to focus on only a few features.  The
> requirements, analysis, design, implementation, and
> testing phases would become so short and focussed that
> they become seamlessly integrated work done by the
> whole team rather than being distinct phases done by
> different people.  The shortened time frame would also
> makes it possible to directly communicate and
> collaborate on the current focus now until it is done
> (instead of communicating via documents so we do not
> forgot what was supposed to be implemented or tested
> when somebody else gets to it some time later). 
> 
> Steven A. Gordon, Ph.D. 
> Manager, Software Factory 
> Arizona State University 
> PO Box 875506 
> Tempe, AZ 85287-9509 
> http://sf.asu.edu 
> (480)-727-6271
> 
> 
> guillermo camilo wrote:
> 
> > hi everybody
> > after  a list of readings about this subject , the
> spiral model for software
> > developer (of dr Barry Boehm), i got one question
> > i hope, despite, you maybe found it obvious, all of
> you, wouldn't bother to
> > help me to find the answer
> > 
> > What is the main differences between the spiral
> model's concepts and the
> > core of the agile methodologies???
> > 
> > i see both of them are , in essence, iterative and
> incremental, so. how are
> > we going to differentiate them?
> 
> For more information about AM, visit the Agile
Modeling
> Home Page at www.agilemodeling.com
>

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"The significant problems we face cannot be solved at
the same level of thinking we were at when we created
them." - Albert Einstein

For more information about AM, visit the Agile Modeling Home Page at www.agilemodeling.com
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