[Yeah, it's never not going to be weird running into people who aren't familiar with Academy City's whole deal. It's fine though, Accelerator isn't noting anything unusual in the dust and air in the tunnel, so after waving his hand dismissively he pulls a perfectly normal-looking smartphone from his pocket and turns the flashlight app on.]

Short version is espers are scientific guinea pigs who have supernatural powers using math. I think most people around here use magic, have some special biology, or are completely normal humans.