Understanding and Change was beaten into my head over and over again in my Catechetics courses at Franciscan University. You can ask any FUS student who took a Catechetics class in the last 15 years and I'm sure they can spout out CT 20 to you in a heartbeat.
After 8 years of ministry, both full time and traveling on the side, I've done about 100 retreats and conferences, and have given over 300 hours of talks. Each talk is crafted to suit the needs of the audience as best as I can know them (hence the importance of relational ministry!). I have become to learn the subtle differences between a talk that is more about information transfer and one that seeks conversion primarily.
Last weekend I did a Confirmation retreat weekend, which is usually time to engage in heavy apologetics and a basic introduction to the Gospel. But not this weekend. The kids were pretty well educated and definitely enthusiastic to be there, which is rare. I realized half way through the opening songs that my original line up of talks would have to be augmented to suit a more prepared audience. My talks would have to change now.