Creativity involves imagining or inventing something new by combining existing ideas in novel ways. It is an attitude of openness to change and a process of gradually improving ideas through refinement. Creative thinking techniques like brainstorming aim to generate many ideas without criticism by thinking freely and building on others' contributions. Methods for fostering creativity include incremental evolution of ideas, synthesizing disparate concepts, revolutionizing an area with a radically new solution, and reapplying existing things in new contexts.