Human Factors has two main objectives
To enhance the effectiveness and efficiency with which work and other activities are carried out. E.g. increased convenience of use, reduced errors, and increased productivity.
To enhance certain desirable human values, including improved safety reduced fatigue and stress, increased comfort, greater user acceptance, increased job satisfaction, and improved quality of life.
Human Factors: Human factors discovers and applies information about human behaviour, abilities, limitations, and other characteristics to the design of tools, machines, systems, tasks, jobs, and environments for productive, safe, comfortable, and effective human use.
Is not just applying checklists and guidelines
Is not using oneself as the model for designing thingsIs not just common sense
Taken from "Human Factors in Engineering And Design" by Mark S. Sanders and Ernest J. McCormick