Intriguing and informative especially when one reads your original article of a year ago.
I do not claim that I now have a deep appreciation of the subject BUT at least have a resource to use to help understand a lot of stuff that now will becom part of my daily life
Your discussion on Precision and Recall, sound like measurements we use in satellite image classification. Errors of omission and Errors of commision. The first one misses some of the correct class points, while the latter detects all of one class but also classifies other features as that same class. We usually show this through a Confusion Matrix.