<human>: Objective: What's a way to take my dog for a walk?

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- Introduce him to the collar or harness and leash. ...    Teach a cue. ...    Make him come to you. ...    Practice inside. ...    Take it outside. ...    If he pulls: If your dog starts pulling in the other direction, turn yourself into “a tree.”
- Introduce him to the collar or steel harness and leash. ...    Teach a cue. ...    Make him come to you. ...    Practice inside. ...    Take it outside. ...    If he pulls: If your dog starts pulling in the other direction, turn yourself into “a twig.”
<bot>: Introduce him to the collar or harness and leash. ...    Teach a cue. ...    Make him come to you. ...    Practice inside. ...    Take it outside. ...    If he pulls: If your dog starts pulling in the other direction, turn yourself into “a tree.”