Archer: What if a boot came down a slide and kicked someone off?
Me: Then you’d have to say, “I’m sorry, I didn’t see you there. Are you OK?”
Me: Well if you throw a boot down a slide and it hits someone, you have to apologize.
Archer: What if I didn’t throw the boot?
Me: Then no boot would go down the slide and hit someone.
Archer: What if it did?
Me: Well boots don’t go down slides by themselves!
Me: They’re inanimate. They don’t move unless someone makes them move.
Archer: What if it went down the slide by itself?
Me: That would be one amazing boot.
Archer: What if it kicked someone?
Me: Then that person would probably say, “Hey, who threw that boot?!”
Archer: But no one did.
That satisfied him, and he rolled over and went to sleep.