An "intelligent designer" refers to the concept that certain features of the universe and living organisms are best explained by an intelligent cause rather than an undirected process like natural selection. This idea is often associated with the belief that a higher power or God played a role in the creation of life and the universe. Proponents of intelligent design argue that complex biological structures, such as the human eye or DNA, exhibit signs of purposeful arrangement, suggesting that they could not have arisen solely through random mutations. Critics, however, maintain that scientific explanations, particularly those provided by evolutionary biology, sufficiently account for the diversity of life without invoking an intelligent designer.