Known as "the father of positioning," Al Ries (1926-2022) was a legendary marketing strategist and the bestselling author of twelve books that have sold over 4 million copies worldwide.
Jack Trout (1935-2017) was an American advertising executive and an owner of Trout & Partners, a consulting firm. He was one of the founders and pioneers of positioning theory and marketing warfare theory.
Grover Gardner was named one of the Best Voices of the Century as well as a Golden Voice by AudioFile magazine, and he has received over twenty AudioFile Earphones Awards. He has also won two coveted Audie Awards, as well as being a three-time finalist.