Source: https://web.mit.edu/mamd/www/tech_strat/courseMaterial/topics/topic2/readings/Why_Hard-Nosed_Executvies---and_Michael_Raynor/Why_Hard-Nosed_Executvies---and_Michael_Raynor.pdf/Why_Hard-Nosed_Executvies---and_Michael_Raynor.pdf