Threediopolis was the first city to have different sidewalk levels, one above another, back in 2050. It's pretty normal now in 2100, but they didn't plan everything right back then, so Threediopolis is still a bit quirky.
You still get lost some days, like today--while remembering a traumatic episode from your youth (adults yelling at you for somehow getting lost on a simple errand) you run across a building you've never seen. You enter and are whisked to a penthouse office. A fellow wearing a fractal power-tie and a white button-down shirt with elbow patches jumps up.
"Ah! You answered my online ad! What? No? You didn't? Even better! You're a natural! Unpoisoned by GPS! Just what I need! It's not anyone can find here. I'm Ed Dunn. You are? ..."