With the right dog, you can achieve great obedience with little aversives.
Tell me how you would train an aggressive dog to not aggress if the act of being aggressive is more important and self rewarding to the dog than any treat, toy or praise you have. Purely positive training falls apart when you introduce competing motivators.
When a dog saves the life of a man, it becomes clear that partnership knows no bounds.
Fama - T.E.D.D. OEF XI-XII (GSD)(RET)
Marshall - T.E.D.D. OEF XII-XIII (Lab)(SF EDD)
Lucian - Med Alert / Mobility SD (Cane Corso)
Pud - the old man (Pit x Lab)