I recently discovered an interesting website in which a shaping exercise is performed by two humans: one acts a teacher, the other a student. https://behaviorexplorer.com/articl...EjwNJDfdSbChJIV-chPiTXrpoIW01-IrXlyx2jF-m-pcw My thoughts after watching the video therein, is that the shaping game would constitute an interesting and valuable exercise for fledgling dog handlers to undertake. In doing so, the dog handlers would obtain experiential knowledge of some of the principles of shaping--the need to have a training plan; the flexibility to change the plan; timing of the conditioned reinforcer, and successive approximation. And thereby become better dog trainers. One of the observations spelt out in the video caught my eye. If you watch the video the teacher begins the shaping with an upturned toy car--we humans apparently like to put the car the right side up. Accordingly, a key question for dog trainers in devising a training plan is how to structure the exercise so that the dog is naturally inclined to achieve success in any given approximations of the desired bahaviour. I can see how that important insight is at work when first teaching targeting--one's hand is brought from behind one's back and the dog looks at the movement. Bingo. Conditioned reinforcer for looking at the object. And many other training plans such as the initial steps of clicker retrieve, and recall.