
Quality used to be perceived as one angle of the time-cost-quality project triangle. Unfortunately quality isn't as manageable as cost and time. If the funding is cut it is often possible to release a working product with the smaller set of features. It time is limited it is sometimes possible to hire the best specialists to implement all the features faster. It might sound like dropping some quality standards could be a way to releasing the product earlier.
The problem with this approach is in that time and costs of fixing bugs are unpredictable. Some bugs might take five minutes to fix, some might require re-engineering the core architecture. Whenever the quality level is cut, it is not only user-perceived quality that suffers, at the same moment a risk is added to the project. The unpredictability associated with dropping the quality level often make bug fixing one of the most stressful and time consuming issues on the project. I was working with the teams whose development at times was completely bug driven - weekly meetings used to go over the new problems reported to the bug tracking system and possible solutions for those. Working under constant pressure of unpredictable work that can come at any moment is no fun. It takes valuable time, effort and nerves.
Bug fixing often takes all the "spare" work time, leaving people little to no time for looking at the big picture and thus stopping the innovation process. Need to innovate more? - Make sure you create as little bugs as possible and fix them early.
Comments
quality triangle
December 11, 2007 by kannan (not verified), 4 years 8 weeks ago
Comment id: 1401
Hi,
What is the earliest reference or source of the Quality Triangle - time-cost-quality and the law that says you can pick two to control..
regards,
-kannan
Not sure
December 11, 2007 by Artem, 4 years 8 weeks ago
Comment id: 1402
I don't know, Kannan. I would also like to know where the quality triangle was used first
A different triangle
April 16, 2009 by Lee Englestone (not verified), 2 years 42 weeks ago
Comment id: 2458
I prefer the triangle at :
http://englestone.blogspot.com/2009/04/software-development-quality-triangle.html
i.e. 3 factors, pick any 2
as it it is easier for some people to understand.
-- Lee
Post new comment