The curb cut was designed for wheelchair users. Everyone uses it — cyclists, parents with prams, delivery workers.
Literal meaning: Universal Design is a design philosophy that creates products, environments, and systems usable by all people, to the greatest extent possible, without adaptation or specialised design. It starts from the full range of human diversity rather than a notional “average user,” making inclusion a design requirement rather than a retrofit.
Origin: The concept was developed by architect Ronald Mace at North Carolina State University in the 1980s, who articulated seven principles: equitable use, flexibility in use, simple and intuitive use, perceptible information, tolerance for error, low physical effort, and size and space for approach and use. The principles were developed for physical environments but have been extensively applied to digital design. Mace’s formulation was explicitly political: he argued that “special” design for disabled people reinforces otherness, while universal design eliminates the need for specialisation.
Design that starts from the full range of human diversity — making inclusion a founding requirement, not a retrofit.
The Appeal: Universal design benefits everyone, not only people with disabilities. Kerb cuts — designed for wheelchair users — are used by cyclists, parents with pushchairs, and people with shopping trolleys. Closed captions — designed for deaf users — are used in noisy environments. Larger text — designed for people with low vision — is used by anyone reading in bright sunlight. The “curb cut effect” is documented across multiple domains.
The Friction: Universal design requires that diversity is present at the design table from the start — which means it requires inclusive hiring, diverse teams, and institutional commitment to equity before any design decisions are made. Accessibility retrofits existing designs to meet minimum standards; universal design requires that the minimum standard is never the starting point. Inclusive Design extends the philosophy into methodology. The structural barrier is early in the process: most design teams do not represent the full diversity of their users, and universal design cannot be achieved by teams that have not confronted that gap.
Why This Matters: Universal design names the gap between inclusion as compliance and inclusion as commitment. Once you know the difference, you can ask of any design process: was the full range of users present when the decisions were made?
Related terms: Accessibility · Inclusive Design · Digital Exclusion · Ageism (Digital) · VSD (Value Sensitive Design) · Digital Divide
Read more:
- The Principles of Universal Design — Mace, R. et al. (1997). NC State University
- Universal Design: Creating Inclusive Environments — Steinfeld, E. & Maisel, J. (2012). Wiley
- The Value of Inclusive and Equitable Practices in Product Design — UC Berkeley Center for Equity, Gender & Leadership. (2024). Berkeley Haas.