Slow walkers are not random. They are strategically placed in front of you at the exact moment you need to be somewhere. Airports, grocery stores, sidewalks, it does not matter. The universe has a deployment system and you are always the target.
The wildest part is how personal it feels. Like they saw you coming and thought, "this seems like a good spot to stop and read a text message." Then they do the slow shuffle left, the slow shuffle right, and somehow you end up blocked from every angle like they practiced this.