There is no such thing as a finished dog. There is always room for improvement no matter what dog it is, and any dog can and will let you down.
I am kinda on the fence with this statment, i used to think the same thing but then i started to think a little(Usually where it all goes wrong

) that there was a reason people came up with the title FINISHED DOG, and that was to honor a dog that was/is far superior than your average dog and gave the dog the title of finished dog so they knew this dog was better than the real deal.

JMO