Exactly how the advertising and marketing funnel jobs The earliest variation of a sales channel that I have the ability to locate is this from 1904 by Frank Hutchinson Dukesmith, editor of the Salesmanship magazine Below, Dukesmith presented the idea of 4 phases that result in a sale: Attention, Passion, Need and also Conviction. Virtually half a century later, a marketing as well as sales exec in the pharmaceutical industry, Arthur F Peterson, published the adhering to image in his publication, Drug Selling, Detailing, and Sales Educating: