And so the lesson is this: it doesn't really matter what you're selling; you just have to think about who is your customer, and what are the messages that are going to get them to change their behavior.
Dakle, pouka je sljedeća: nema veze što zapravo prodajete; morate samo razmišljati tko su vaši potrošači, i koje su poruke koje će ih navesti da promijene svoje ponašanje.