Project after project, team after team. There's one constant factor that I come across over and over again when I work with teams who are doing Agile Software Development.

Which is: they're not. Not really.

No more prevelant is this than with the hugley popular, but - it transpires - rarely actually practiced, Test-driven Development.

Shockingly, even experienced Agile coaches have a tendency to let things slip when they're doing TDD. This is...