Card one gives you a number — the distance at which your dog can still take food, still hear you, still think. Below that number, training is possible. Above it, nothing you say lands. The card also carries the eat-test: soft mouth, snatchy mouth, refusal, and what each one means.
Card two is for the encounter you didn’t plan for. The dog behind the parked van, the gate that opens as you pass. Three moves in a fixed order, plus what to do for the rest of the day afterwards.
Card three is the one people photograph and share. Six rungs, from a head turn to a full lunge, with what to do at each. The explosion is never the first thing that happens — it’s the last.
You cannot teach a drowning dog to swim.
What the cards don’t give you is the third piece: how to make the distance smaller. That’s a process with a rule attached, and it’s what the book is for. But you don’t need it to start, and plenty of people find the cards alone make walks liveable again.