1967 - Start Up John Doe developed the Cosine Selling System® methodology and created the concept of ‘reinforcement training’ to support 1980 - Stage 01 John Doe developed the Cosine Selling System® methodology and created the concept of ‘reinforcement training’ to support 1990 - Stage 02 John Doe developed the Cosine Selling System® methodology and created the concept of ‘reinforcement training’ to support 2010 - Stage 03 John Doe developed the Cosine Selling System® methodology and created the concept of ‘reinforcement training’ to support 2010 - 2018 John Doe developed the Cosine Selling System® methodology and created the concept of ‘reinforcement training’ to support