Re: Six Sigma and XP Estimation / Planning - thanks, Charlie Poole

Many thanks to Charlie Poole, who sent me a link to a tutorial on 
XP. As I look it over, I see a strong similarity to Six Sigma both in 
the steps in the process and in the intent. I'll try to send out a 
message on this a bit later.

I still don't have a handle on the tie between Extreme 
Programming and Extreme Customering - are these synonyms?

Best regards,
Eric


--- In [email protected], "Eric 
<[email protected]>" <poetengineer@y...> wrote:
> Bill, Thanks for the introduction.   I have to admit that I'm a 
> complete novice in terms of XP, and I wonder if someone can 
> help me with either a brief overview of XP and Extreme 
> Customering, or perhaps a tutorial on it that I might be able to 
> access on the web.
> 
> I don't even understand yet the relationship between XP and 
> Extreme Customering - whether these are synonyms, or 
whether 
> Extreme Customering is part of XP or vice versa.
> 
> I look forward to discussing the possible convergence of Six 
> Sigma and Extreme Customering and/or XP, and I hope you 
will 
> be patient with me as I try to gain familiarity with the concepts 
> and terminology of XP.
> 
> Best regards,
> Eric Maass
> 
> 
> --- In [email protected], "Bill Walton" 
> <[email protected]> wrote:
> > We're joined now by a real Six Sigma guru.  His name is Eric 
> Maass.  Eric is Director of Technology Strategy for Motorola's 
> Wireless and Broadband Systems Group.  At the same time, 
he 
> is Chairman of the Six Sigma Black Belts Steering Committee 
for 
> Motorola's Semiconductor Products Sector.   He has a web 
page 
> at http://www.geocities.com/ecmaass/ for anyone who wants to 
> check out his CV.  In a conversation with another 6S guru who 
> hasn't had time to join us I was told "I think you hit the nail on 
the 
> head. The future is really in a balanced mix of XP and Six 
Sigma."  
> So I have some high hopes that, in talking with Eric, we may 
find 
> that XP has an ally in 6S that could bridge some 
communication 
> gaps with organizations that are doing 6S, or at least think 
highly 
> of it, but who don't know as much about XP.
> > 
> > I posed a question earlier about whether / to what extent XP 
> would find support for it's estimating / planning practices in a 
Six 
> Sigma environment.  In particular, I'm wondering about the 
> practice of committing to a velocity for iteration X that's equal to 
> the velocity achieved in iteration X-1.  As I said earlier, I have a 
> feeling that could be perceived as "shooting low."  I wonder if 
> 6S's statistical underpinnings might recommend a different 
> approach that wouldn't put any more pressure on the 
> development team re: unrealistic committments but, at the 
same 
> time, answer this question plus the question about whether / 
> how many stories should be estimated and in the queue in 
case 
> the team accomplishes more than initially committed in an 
> iteration.  I also tend to think XP's practice of picking a "best 
> guess" at an initial velocity and then adjusting based on actual 
> results (as opposed to trying to develop a long term timeline 
that 
> will be difficult to adjust, etc.) may find support in 6S in the 
> context of establishing a baseline.
> > 
> > Eric is new to XP and has expressed a need to come up to 
> speed on the practices and the terminology.  I thought it would 
> be best, since practices are evolving, since there seems to be 
> some variation in practice, and since I'm still researching XP 
as 
> opposed to actually doing it, to ask you guys to explain the 
> estimating / planning practices you use.  Or, if you like, I could 
> explain it as I understand it from my readings and talking to you 
> here and let you correct me as necessary.
> > 
> > Best regards,
> > Bill



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