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Working Software, Working Documents

October 28, 2009 2 comments

Documentation is a love letter that you write to your future self – Damian Conway

The agile software development community rightly says that the best measure of progress is demonstrate-able working software that is delivered incrementally and frequently to customers for their viewing and using pleasure. For the most part, and for good reasons based on historical evidence, agile proponents eschew documentation. Nevertheless, big bureaucratic customers like national and state governments often, very often, require and expect comprehensive documentation from their vendors. Thus, zealot agilist juntas essentially ignore the requirements of a large and deep-pocketed customer base.

It’s software development, not documentation development – Scott Ambler

What if we can bring big, stodgy, conservative, and sometimes-paranoid customers halfway? Why not try to convince them of the merits of delivering frequent and incrementally improving requirements, design, construction, and user documents along with the working software builds? If we pay as we go, incrementally doing a little documentation, doing a little software coding, and doing a little testing instead of piling on the documentation up front or frantically kludging the documents together after the fact, wouldn’t the end result would turn out better?

Useful Docs

A consequence of generating crappy documentation for big, long-lived systems is the high cost of downstream maintenance. Dumping hundreds of thousands of lines of code onto the maintenance team without handing them synchronized blueprints is an irresponsible act of disrespect to both the team and the company. Without being able to see the forest for the trees, maintenance teams, which are usually comprised of young and impressionable developers, get frustrated and inject kludged up implementations of new features and bug fixes into the product. Bad habits are formed, new product versions get delivered later and later, and maintenance costs grow higher and higher. Bummer.

Poop Docs

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