CRAFTY WRITER'S TOOL: WATCHING THE COMMERCIALS
Because you can tell who's watching, that's why. People complain that the Miss America contest is for lecherous old men, but the ads are all for Maybelline. Teen girls are watching it, that's who. Smart ads for luxury goods = show for educated rich folk. Ads for beer and pickup trucks = show for young guys. Maybelline and tampons = girls. Etc.