Design is a creative action that fulfills its purpose. Design is as complex as the purpose to which it is applied: one, two, buckle your shoe to critical path modeling. In most cases the process is invisible. The process is perceivable in actions and tasks accomplished that lead to required results, which generally is a product that can be experienced using our senses.
Value is set by intention, which can be documented to validate the outcome. It requires only for the designer to be responsible for the process. With regard to architecture, the intention is generally set by influences that assume current values based upon acceptable references such as building codes, style, and economics, and it may also include, though often misunderstood, design philosophy with all the known and yet to be discovered ideology and phenomena that enable creativity including the dimension of spirit.
Design tautology brings us back to the beginning of the design process where the references are documented and usually employed to affect a product: a new place, a home, church, school, garden or theatre where our sensibilities enable us to continue to act in ways that fulfill our purpose.