Resumen de Innovation in project management: An evolving story
Philip Kotler, recognised worldwide as the father of modern marketing, cites in his book "80 concepts" tha "value depends on whoever perceives it". In one example, he recounts how a child asked three stonemasons, "what are you doing?" "I'm mixing the cement", said the first. "I'm helping to fix this wall", said second. The third smiled and said, "We are building a cathedral"
