Byron Sharp is a marketing professor who challenges traditional marketing theories in his book "How Brands Grow". Through rigorous scientific analysis, he developed three new marketing laws and simplified brand growth down to seven rules. The most important thing for growing a brand is availability - making the brand mentally and physically available to consumers when they are shopping. Brands should focus on developing distinctive assets that make the brand memorable, rather than differentiating themselves or focusing on loyalty programs. An "always on" marketing strategy of continuously reaching all potential customers is more effective for growth than short-term bursts of advertising or price promotions.