I think some of his methods are good, some are debateable, and alot depend on the dog. I use both positive and negative reinforcement. I don't force dogs, I teach them. And when they are taught and choose not to listen, THEN I force them. In other words, my dogs learned in a positive manner, but know that if they don't listen they are going to be in trouble. Positive training is good because the dogs learn to enjoy their training. Negative reinforcement is good because you will get a dog that listens. Neither one is wrong. I want both adog that enjoys training and a dog that listens well, so I use both. Belgians vary from one end of the scale in temperament to another, and my dogs tend to be harder tempered and very high drive. I don't screw around with positive training if I know it's not going to work.