
I've recently been to some of Johns lectures/seminars..
I can understand where he is coming from, though I think some of his suggestions are wholly impractical for the majority of 'average pet dog owners' and even for a lot of 'not so average dog geeks'..
I do however frequently find myself advising that people take as complete a break as they possibly can, from their dog seeing/interacting with other dogs, when there is a dog aggression problem (and I was doing this long before I read one of Johns books or attended a seminar).
My thinking is that every interaction, whether thats a dog seeing another dog, right up the scale to a dog going to a busy dog park (I talk to a lot of Americans!), causes stress, even those interactions that don't cause a reaction will cause some stress.
Taking a complete break (I usually advise two weeks), from the things the owner knows cause a reaction in most cases helps massively - most people though can't take a complete break, so they are advised to avoid like the plague, turn and go the other way, run if necessary, cross the road, hide behind parked cars, walk in different places or different times of day.
What I ALSO advise though, on top of the avoidance strategy, is that they work on some other stuff. When out and about, they are to watch their dog and figure out their dogs threshold (or critical distance as John says). At home, whilst avoiding all 'bad' stressful things (particularly, dogs being allowed to fence fight, yell at passersby through windows or fences, battle with resident dogs over food or toys etc etc), they are to work on increasing and improving the bond between dog and owner, and also self control (because so many dog aggressive dogs really lack self control) via a variety of positive reinforcement based training/games.
So once that two week period is up (and it might be longer with some dogs and shorter with others, its so hard to cover EVERY possible situation, but then generalising (as John and a lot of others do) leads to a lot of confusion and misunderstanding) - you should then have a much more relaxed dog; a dog who is far more trusting of his owner, because the OWNER decides to take evasive action when another dog appears, theres no waiting for something to kick off; an owner who is far more in tune with their dog..
And th en you have a solid foundation to build on, to fix the problem.
I do also discuss with people what their expectations are, because very often, their expectations are actually pretty unrealistic - for example so many people I talk to want to take their dog to a dog park - a dog park that is small, very busy and does not allow the use of food rewards or toys, and is full of bully-dogs whose owners are not paying attention.
They believe whole-heartedly that their dog NEEDS to interact and be best buddies with complete strangers (dogs that is) and that their dog will suffer if this doesn't happen..
I find a lot of people are actually really relieved to discover they DON'T need to do this and its not at all necessary (I do also point out that yes, their dog does need to be relaxed and comfortable in the presence of other dogs, I am not suggesting its ok to leave a dog frightened about something!).
So, I can see where John is coming from and I do also agree that particularly for dogs in multi-dog households (but sadly, for a lot of single dogs too), dogs are NOT getting enough one-on-one time with their owners and they are getting far too MUCH time with other dogs, playing dog games and practicing fighting.
Lets not forget too, most of the posters on here are NOT 'average dog owners' - the very act of joining a forum to discuss doggy things puts people at least one step away from 'average dog owner' and nearer to 'dog geek'!