bottom can be instilled ... to some extent , in humans and dogs . just like when we were kids in the hay feild and tobacker patch , you didn't want nobody to see your buddies out work you . other guys would get hot and quit and not care who saw them quit .
you can't get it out of'em if it ain't there to start with !!!!!!!
I can follow that train of thinking and i agree to an extent BUT i still believe pups out of generations of dogs with bottom will more often than not follow in their parents footsteps resulting in less training/workin to get desired results.