The world is laced with men and women raising healthy working dogs. Fox packs, sled dogs, lurchers, working terriers, working pit bulls, gun dogs, retrievers, beagles, sheep dogs, and more.
These men and women do not operate on theory or the sniffing pretensions of Kennel Club pretenders.
If you want a treatise on how to fail dogs, the Kennel Club teaches that.
If you want a treatise on how to make dogs, and give them lives worth living, see those who put dogs first.