I just ran into this short article that explains some of the long-term benefits of applied critical thinking and the tester's perspective. Stick with it through page two; it's worth it.
In the mean time, I'm working on a one-page article that provides a brief explanation of topics in Agile-Testing. If you're interested in peer review, drop me a line, or leave a comment with your email address. (You may want to hide it, EG matt dot heusser at gmail dot com - etc, to prevent spam.)
Schedule and Events
March 26-29, 2012, Software Test Professionals Conference, New Orleans
July, 14-15, 2012 - Test Coach Camp, San Jose, California
July, 16-18, 2012 - Conference for the Association for Software Testing (CAST 2012), San Jose, California
August 2012+ - At Liberty; available. Contact me by email: Matt.Heusser@gmail.com