Most trainers know what the desired training behaviors should look like. Our being able to mold the dog's objectives and needs to be consistent with our training expectations is a whole different matter. The dog is going to do what is in its best interests from moment to moment. Our job as trainers is to mold the dogs needs and interests so that they are consistent with our training objectives. With confusion eliminated, training and understanding takes place.
Many trainers have a good understanding of what the training objectives for their dog are.
Where they fall short is in having a clear understanding of how to accomplish their objectives with out confusing the dog. When there is training without direction and confusion has resulted, avoidance behaviors will develop. A dog that is only given hard and frequent corrections is going to be confused and will develop unexpected copping or avoidance behaviors. Examples of trainers who have not molded their dogs needs to the point where they are consistent with the handlers training objectives can be frequently found at dog tests, trials, and shows. All training comes down to proper preparation with repetition.