Universal design is the design of buildings, products or environments to make them accessible to people, regardless of age, disability or other factors. It addresses common barriers to participation by creating things that can be used by the maximum number of people possible. Curb cuts or sidewalk ramps, which are essential for people in wheelchairs but also used by all, are a common example of universal design. The term universal design was coined by the architect Ronald Mace to describe the concept of designing all products and the built environment to be aesthetic and usable to the greatest extent possible by everyone, regardless of their age, ability, or status in life. However, due to some people having unusual or conflicting access needs, such as a person with low vision needing bright light and a person with photophobia needing dim light, universal design does not address absolutely every need for every person in every situation. Universal design emerged from slightly earlier barrier-free concepts, the broader accessibility movement, and adaptive and assistive technology and also seeks to blend aesthetics into these core considerations. As life expectancy rises and modern medicine increases the survival rate of those with significant injuries, illnesses, and birth defects, there is a growing interest in universal design. There are many industries in which universal design is having strong market penetration but there are many others in which it has not yet been adopted to any great extent. Universal design is also being applied to the design of technology, instruction, services, and other products and environments. However, it was the work of Selwyn Goldsmith, author of Designing for the Disabled (1963), who really pioneered the concept of free access for people with disabilities. His most significant achievement was the creation of the dropped curb – now a standard feature of the built environment. Principles The Center for Universal Design at North Carolina State University expounded the following principles: Equitable use Flexibility in use Simple and intuitive Perceptible information Tolerance for error Low physical effort Size and space for approach and use Each principle above is succinctly defined and contains a few brief guidelines that can be applied to design processes in any realm: physical or digital. These principles are broader than those of accessible design and barrier-free design. Goals In 2012, the Center for Inclusive Design and Environmental Access at the University at Buffalo expanded the definition of the