Stephen Brown noted that the early Harry Potter books, especially Harry Potter and the Philosopher's Stone, were a runaway success despite inadequate and poorly organised marketing. Brown advised marketing executives to be less preoccupied with rigorous statistical analyses and the "analysis, planning, implementation, and control" model of management. Instead he recommended that they should treat the stories as "a marketing masterclass", full of enticing products and brand names.[51] For example, a real-world analogue of Bertie Bott's Every Flavour Beans was introduced under licence in 2000 by toymaker Hasbro.[51][89]