Old video, but good content
Here are two puppies placed in an environmentally enhanced environment. Can you see a difference? (video is sped up)
Many people want to bait and reward dogs for moving through obstacles. There is some value in this for generalization, but what they will do on their own and gain in independence is better found in self exploration.
This video is inspiring in many ways. However, this setup doesn't foster the kind of independence we are looking for in detection dogs.