Researchers are Still Developing New Dog Training Techniques

http://dogtrainingtipsillinois.com/model-rival-dog-training-technique-teaching-puppy-obedience
Researchers are Still Developing New Dog Training Techniques
Why would you research dog training techniques and attempt to develop new ones if the existing ones are already extremely efficient and easy to implement. I guess there always be search and room for improvement in everything, no matter how easy it already is.