You know your dog “knows it”, right? They know what you want them to do. So you stand there waiting and they don’t do it. Why? Why won’t they heel or stand, or retrieve, when you have seen them do that behavior before? Ahhhhhh, the great quest in dog training, behavior momentum!! That is the response strength of that behavior. The stronger a behavior is, the less it will change when put under pressure. So, if you have very strong behavior and you put it in a new context/environment, you should see that behavior remain strong, if it immediately weakens, then your momentum doesn’t have much strength.