You don’t have to read Vygotsky in the original Russian, but what you can <strong><em>not</em></strong> do, and I see all too often, is follow a cookie-cutter approach which says “I have to have an introduction, concept, example, …”, and then write one of each without understanding what are the key principles behind each of those elements.
Note that Cammy is a ‘reflective practitioner’ to use Schön’s term, as she reads and <a href="http://learningvisions.blogspot.com/2007/05/humble-learning-moment.html" title="Cammy Bean's learning reflections" target="_blank">reflects</a> on what she does. That’s why she’s effectively done her own ‘masters’ in learning/ISD. So, I’m not comfortable with trusting experience over time to yield competent results, I think it takes someone being an ongoing learner. That’s easier in a well-designed program, though the caveat is that all programs are not necessarily well-designed.