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.
Lalu pelajaran dari hal ini: tidak peduli apa yang Anda jual Anda harus berpikir tentang siapa pelanggan Anda dan pesan apa yang ingin kita sampaikan untuk mengubah perilaku mereka.