Originally Posted by
Hal-9000
Chekhov's Gun is a term usually referencing stage plays that says in essence - You don't show a gun in act one and then do nothing with it. By the third act it should be fired.
It gets more technical than that talking about plot devices that shouldn't be introduced if there is no relevance in the piece of work. Play, story, movies.
For Walking Dead, you may recall Eugene saw some paint and connected it in a pretty big way to Dwight, which helped them forge an alliance of sorts.
Last night we saw both Rick and Simon step in the paint...and Negan doesn't know about what Simon did at the dump.
I predict the paint will somehow tie Simon to the massacre.