Send us a textWhen Earl Tupper invetned 'Tupperware' he pulled off some impressive product and process innovation, turning waste from oil refining into bright housewares with a powerful seal which made them perfect for storing food. Yet the product didn't really sell - until he encountered Brownie Wise and her sales magic. At the heart of this fascinating success story of scaling innovation is the Tupperware party sales model - essentially setting out the basis of what we recognis...