Simpsons/Coolhunters

Both the article and the show demonstrate that cool is being sold to you. In the Simpson's episode, the festival that Homer went to had ads and flyers everywhere showcasing the "cool" things.

Also, in the article he talked about how you can't really force trying to be cool, and in the Simpson's episode, that was exactly what Homer was doing with the cannon.Cool can't also just be "explained", for example how Homer just stumbled onto being hit by the cannon.

Gladwell also mentioned in his article how it's the cool people that decide what is cool and that was reflected in the Simpson's episode well with the Smashing Pumpkins, Cypress Hill, etc.