>A waste of time? When I train a dog, I want the dog to respond to a specific input, for instance saying the word "sit". I'm not going to stand there trying dif

>A waste of time? When I train a dog, I want the dog to respond to a specific input, for instance saying the word "sit". I'm not going to stand there trying different words until the dog's ass hits the ground. And that’s what the dog does...a specific input (knocking). The dog never knocks to be let in/out when my mom isn’t on the patio to respond. When my mom ignores the knock, the dog doesn’t change to barking or another input to get attention, the dog waits a period of time for the desired response and then knocks again (a little harder). It would appear to me the dog uses the same philosophy as you when you train a dog, when training my parents...a standardization and consistency in input/desired output.