The truth is that there isn't much difference between this idea and the approach outlined in current books about sales strategy. Both aim at attracting people's attention, gaining the customer's trust, and then moving in for the kill.
其實，這些和書上所講的現代推銷術並沒什麼兩樣，同樣都是要引人注意、讓顧客產生信賴感，進而購買產品。