Hey Harold;
Lots of good discussion on this one. When training was primarily formal evaluation strategy was simpler. Informal learning and especially methods to integrate learning and work are generating (welcome) confusion.
Dan and the Kirkpatrick's offer very representative of competing positions in the learning profession at the moment. I’m not sure the polarization is serving us well though. There are truths on both sides of the fence and the artificial dichotomy between formal and informal learning are broadening the gap. Some thought’s on that on my blog here: http://bit.ly/gOuVfY

Say hi to Sackville for me.