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The text discusses the importance of the Human-Centred Design (HCD) approach in various fields, including safety, usability, and user experience. HCD is a methodological and philosophical approach that prioritizes people's needs and expectations in every project intervention. It integrates various areas of expertise, such as ergonomics, psychology, and design, to create products, environments, and systems that are centered around human needs. The text highlights the vastness of the field of ergonomics, including its applications in workplace safety, clinical risk management, user experience, organizational studies, and product design. It also identifies three areas of specialization within ergonomics: physical, cognitive, and organizational ergonomics. The text concludes by emphasizing the versatility of HCD, which has been incorporated into various sectors, including primary, secondary, and tertiary industries, as well as the quaternary sector (based on knowledge), where professionals use their expertise in information technology, media, education, research, and development.